Thank you.

…tomatically installed when running autoreconf)

Autotools update

* build system: remove support for GTK+ 1.x and update to autoconf 2.69

* remove support for GTK+ 1.x from source

* remove support for GTK+ < 2.18

* remove support for GLib 1.x

* remove deprecated g_thread_init()

* replace deprecated g_strcasecmp()

* replace 2 deprecated GtkLists (4 remaining)

* replace deprecated GtkType

* replace deprecated gtk_type_new()

* unify all *_class_init signatures

* unify *_init signatures

* replace deprecated gtk_type_unique()

* remove deprecated gtk_type_class()

* replace deprecated gtk_signal_new()

* replace deprecated gtk_signal_emit*

* rename GTK_SIGNAL_FUNC and replace deprecated gtk_signal_connect()

* replace deprecated gtk_signal_connect_object()

* replace 1 deprecated GtkList (3 remaining)

* replace 1 deprecated GtkList in configdialog

* replace deprecated GdkPixmap in main and mainwindow.c

* replace deprecated GtkToolbar API

* fix previous commit for GtkToolbar

previous commit changed 3 toggle buttons to normal buttons by mistake

* replace 1 deprecated GtkList in effectbrowser

* replace deprecated GTK_WIDGET_SET_FLAGS

* replace deprecated gtk_label_parse_uline()

* replace deprecated GtkItemFactory in effectbrowser

* update translations because of string change in previous commit

Note: charset for Swedish and Russian changed to UTF-8

* replace deprecated gtk_marshal_*

* replace deprecated GtkItemFactory in mainwindow.c

Note: GtkItemFactory's successor is GktUIManager, but that is deprecated
in 3.10. Therefore creating all menus the traditional way.

* replace deprecated GTK_WIDGET_VISIBLE

* replace deprecated gtk_signal_disconnect_by_data()

* replace last GtkList in recorddialog.c

There is now a ListObject with presets and a parallel GtkListStore with
the same presets which is a bad solution and prone to regressions. The
ListObject/GList is kept, because most internal widgets/objects are
operating with GLists.

* replace deprecated gtk_widget_set_usize()

* replace deprecated gtk_object_get_data()

* replace deprecated GtkCombo in soxdialog

* remove unused variables

* replace last deprecated gtk_signal_*

* fix regression: Toolbar was not visible

remove GtkEventBox and size requests

* replace deprecated gtk_hbutton_box_set_layout_default()

* replace deprecated g_strdown()

* replace deprecated gtk_object_set_data()

* update .gitignore

* silence unused-but-set-variable warning

* initialize variable before use

* replace deprecated g_source_get_current_time()

* replace deprecated gtk_widget_set_uposition()

* Restore original toolbar size

* Get rid of deprecated GTimeVal

* Remove deleted files from build

* Update po files

* Update gettext requirement

* Reduce autoconf requirement

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Co-authored-by: Gabor Karsay <[email protected]>