Unify copyright notices.

ec936d5 Add consensus hash for block 450,000 (Zathras)

0b70241 Merge bitcoin#474: Fix header guards using reserved identifiers
ab1f89f Merge bitcoin#478: Fixed multiple typos
8c7ea22 Fixed multiple typos
abe2d3e Fix header guards using reserved identifiers
f532bdc Merge bitcoin#459: Add pubkey prefix constants to include/secp256k1.h
cac7c55 Merge bitcoin#470: Fix wnaf_const documentation
768514b Fix wnaf_const documentation with respect to return value and number of words set
b8c26a3 Merge bitcoin#458: Fix typo in API documentation
817fb20 Merge bitcoin#440: Fix typos
12230f9 Merge bitcoin#468: Remove redundant conditional expression
2e1ccdc Remove redundant conditional expression
bc61b91 add pubkey prefix constants to include/secp256k1.h
b0452e6 Fix typo in API documentation
4c0f32e Fix typo: "Agressive" → "Aggressive"
73aca83 Fix typo: "exectured" → "executed"

git-subtree-dir: src/secp256k1
git-subtree-split: 0b70241

0b70241 Merge #474: Fix header guards using reserved identifiers
ab1f89f Merge #478: Fixed multiple typos
8c7ea22 Fixed multiple typos
abe2d3e Fix header guards using reserved identifiers
f532bdc Merge #459: Add pubkey prefix constants to include/secp256k1.h
cac7c55 Merge #470: Fix wnaf_const documentation
768514b Fix wnaf_const documentation with respect to return value and number of words set
b8c26a3 Merge #458: Fix typo in API documentation
817fb20 Merge #440: Fix typos
12230f9 Merge #468: Remove redundant conditional expression
2e1ccdc Remove redundant conditional expression
bc61b91 add pubkey prefix constants to include/secp256k1.h
b0452e6 Fix typo in API documentation
4c0f32e Fix typo: "Agressive" → "Aggressive"
73aca83 Fix typo: "exectured" → "executed"

git-subtree-dir: src/secp256k1
git-subtree-split: 0b70241

Conflicts:
	src/hash.h
	src/util.h

1e6f1f5 Merge bitcoin#529: fix tests.c in the count == 0 case
95e99f1 fix tests.c in the count == 0 case
452d8e4 Merge bitcoin#523: scratch: add stack frame support
6fe5043 scratch: add stack frame support
9bc2e26 Merge bitcoin#522: parameterize ecmult_const over input size
7c1b91b parameterize ecmult_const over input size
dbc3ddd Merge bitcoin#513: Increase sparsity of pippenger fixed window naf representation
fb9271d Merge bitcoin#510: add a couple missing `const`s to ecmult_pippenger_wnaf
cd5f602 Merge bitcoin#515: Fix typo
09146ae Merge bitcoin#512: secp256k1_ec_privkey_negate - fix documentation
ec0a7b3 Don't touch leading zeros in wnaf_fixed.
9e36d1b Fix bug in wnaf_fixed where the wnaf array is not completely zeroed when given a 0 scalar.
96f68a0 Don't invert scalar in wnaf_fixed when it is even because a caller might intentionally give a scalar with many leading zeros.
9b7c47a Fix typo
6dbb007 Increase sparsity of pippenger fixed window naf representation
1646ace secp256k1_ec_privkey_negate - fix documentation
9b3ff03 add a couple missing `const`s to ecmult_pippenger_wnaf
cd329db Merge bitcoin#460: [build] Update ax_jni_include_dir.m4 macro
7f9c1a1 Merge bitcoin#498: tests: Avoid calling fclose(...) with an invalid argument
f99aa8d Merge bitcoin#499: tests: Make sure we get the requested number of bytes from /dev/urandom
b549d3d Merge bitcoin#472: [build] Set --enable-jni to no by default instead of auto.
d333521 Merge bitcoin#494: Support OpenSSL versions >= 1.1 for ENABLE_OPENSSL_TESTS
2ef8ea5 Merge bitcoin#495: Add bench_ecmult to .gitignore
82a96e4 tests: Make sure we get the requested number of bytes from /dev/urandom
5aae5b5 Avoid calling fclose(...) with an invalid argument
cb32940 Add bench_ecmult to .gitignore
31abd3a Support OpenSSL versions >= 1.1 for ENABLE_OPENSSL_TESTS
c95f6f1 Merge bitcoin#487: fix tests typo, s/changed/unchanged
fb46c83 Merge bitcoin#463: Reduce usage of hardcoded size constants
02f5001 Merge bitcoin#490: Disambiguate bench functions and types
1f46d60 Disambiguate bench functions and types
f54c6c5 Merge bitcoin#480: Enable benchmark building by default
c77fc08 Merge bitcoin#486: Add pippenger_wnaf for multi-multiplication
d2f9c6b Use more precise pippenger bucket windows
4c950bb Save some additions per window in _pippenger_wnaf
a58f543 Add flags for choosing algorithm in ecmult_multi benchmark
36b22c9 Use scratch space dependent batching in ecmult_multi
355a38f Add pippenger_wnaf ecmult_multi
bc65aa7 Add bench_ecmult
dba5471 Add ecmult_multi tests
8c1c831 Generalize Strauss to support multiple points
548de42 add resizeable scratch space API
0e96cdc fix typo, s/changed/unchanged
c7680e5 Reduce usage of hardcoded size constants
6ad5cdb Merge bitcoin#479: Get rid of reserved _t in type names
7a78f60 Print whether we're building benchmarks
4afec9f Build benchmarks by default
d1dc9df Get rid of reserved _t in type names
0b70241 Merge bitcoin#474: Fix header guards using reserved identifiers
ab1f89f Merge bitcoin#478: Fixed multiple typos
8c7ea22 Fixed multiple typos
abe2d3e Fix header guards using reserved identifiers
57752d2 [build] Set --enable-jni to no by default instead of auto.
f532bdc Merge bitcoin#459: Add pubkey prefix constants to include/secp256k1.h
cac7c55 Merge bitcoin#470: Fix wnaf_const documentation
768514b Fix wnaf_const documentation with respect to return value and number of words set
b8c26a3 Merge bitcoin#458: Fix typo in API documentation
817fb20 Merge bitcoin#440: Fix typos
12230f9 Merge bitcoin#468: Remove redundant conditional expression
2e1ccdc Remove redundant conditional expression
e7daa9b [build] Tweak JNI macro to warn instead of error for JNI not found.
5b22977 [build] Update ax_jni_include_dir.m4 macro to deal with recent versions of macOS
bc61b91 add pubkey prefix constants to include/secp256k1.h
b0452e6 Fix typo in API documentation
84973d3 Merge bitcoin#454: Remove residual parts from the schnorr expirement.
5e95bf2 Remove residual parts from the schnorr expirement.
cbc20b8 Merge bitcoin#452: Minor optimizations to _scalar_inverse to save 4M
4cc8f52 Merge bitcoin#437: Unroll secp256k1_fe_(get|set)_b32 to make them much faster.
465159c Further shorten the addition chain for scalar inversion.
a2b6b19 Fix benchmark print_number infinite loop.
8b7680a Unroll secp256k1_fe_(get|set)_b32 for 10x26.
aa84990 Unroll secp256k1_fe_(get|set)_b32 for 5x52.
cf12fa1 Minor optimizations to _scalar_inverse to save 4M
1199492 Merge bitcoin#408: Add `secp256k1_ec_pubkey_negate` and `secp256k1_ec_privkey_negate`
6af0871 Merge bitcoin#441: secp256k1_context_randomize: document.
ab31a52 Merge bitcoin#444: test: Use checked_alloc
eda5c1a Merge bitcoin#449: Remove executable bit from secp256k1.c
51b77ae Remove executable bit from secp256k1.c
5eb030c test: Use checked_alloc
72d952c FIXUP: Missing "is"
70ff29b secp256k1_context_randomize: document.
4c0f32e Fix typo: "Agressive" → "Aggressive"
73aca83 Fix typo: "exectured" → "executed"
8e48aa6 Add `secp256k1_ec_pubkey_negate` and `secp256k1_ec_privkey_negate`

git-subtree-dir: src/secp256k1
git-subtree-split: 1e6f1f5

b0452e6 Fix typo in API documentation (Tim Ruffing)

Pull request description:

Tree-SHA512: 0376756fc36004e9bb205c6b811e8b28ecd595db1fc2b577bf27c5c227d81ec8bca2e44cfab91fb76c9640d0f7c99970ce9ab94d72e26289cc8faeb747337309

d358364 Integration test for pegins and pegouts (Steven Roose)
d888540 Add support for signed-blocks parent chains (Steven Roose)
b56f7da Add pegin and pegout RPC calls (Steven Roose)
7bb9380 Recognize pegout scripts (Steven Roose)
4688e3e Add periodic RPC recheck and invalid block recheck (Steven Roose)
0e4e834 Add pegin validation unit tests (Steven Roose)
5cbb014 Validation of pegin inputs (Steven Roose)
f4adb46 Add spentness flag to pegin coins (Steven Roose)
0d07d21 Change CCoinsMapKey to use chain-aware outpoints (Steven Roose)
22ec499 Add "vdata" field to createrawtransaction rpc (Steven Roose)
2db1f2b Add tweakfedpegscript rpc (Steven Roose)
d6686b6 Add getsidechaininfo rpc (Steven Roose)
fb8a453 Add pegin validation utility methods (Steven Roose)
037b260 Serialize parent blocks without pegin flags (Steven Roose)
89613b8 Skip normal validation of pegin inputs (Steven Roose)
ae54d4a Add pegin input serialization (Steven Roose)
ac1eadd Add support for NullData addresses (OP_RETURN) (Steven Roose)
18ee341 Add parent address encoding (Steven Roose)
d39d440 Add mainchain rpc client (Steven Roose)
238a72b Add arguments for parent chain characteristics (Steven Roose)