Bump version string to 1.7R4 (dropping the "prerelease")

hns · hns · commit d2fd6e0b3a62 · 2012-06-11T16:23:01.000+02:00
diff --git a/build.properties b/build.properties
@@ -4,9 +4,9 @@
 
 name: rhino
 Name: Rhino
-version: 1_7R4pre
+version: 1_7R4
 # See Context#getImplementationVersion() for format of this!
-implementation.version: Rhino 1.7 release 4 PRERELEASE ${implementation.date}
+implementation.version: Rhino 1.7 release 4 ${implementation.date}
 
 build.dir: build
 rhino.jar: js.jar
