Dropping GStreamer 0.1 Support

[Michael McConville]

On Sat, Jun 13, 2015 at 08:19:19PM -0700, Jorge Villaseñor wrote:
> I think we should drop gstreamer 0.1 on pidgin 3. Maybe this regressions
> should go to michael's GSoC todo list.

I've already started looking into it.

The preprocessor conditions seem to all be in five source files (see
below). Of course, it would allow for some build system cleanup as well.

$ fgrep -Rn VERSION . | grep GST
./libpurple/media/backend-fs2.c:84:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:242:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:261:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:274:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:282:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:292:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:303:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:310:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:320:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:334:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:562:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:948:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:1771:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:2033:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:2045:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:2067:#if GST_CHECK_VERSION(1,0,0)
./libpurple/media/backend-fs2.c:2551:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:42:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:316:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:625:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:635:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:646:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:701:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:1137:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:1347:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:1365:#if GST_CHECK_VERSION(1,0,0)
./libpurple/mediamanager.c:1368:#elif GST_CHECK_VERSION(0,10,31)
./libpurple/mediamanager.c:1407:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtksound.c:556:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:59:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3485:#if !GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3527:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3633:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3719:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3921:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3934:#if GST_CHECK_VERSION(1,0,0)
./pidgin/gtkprefs.c:3937:#elif GST_CHECK_VERSION(0,10,31)
./pidgin/gtkprefs.c:3977:#if GST_CHECK_VERSION(1,0,0)
./finch/gntsound.c:368:#if (GST_VERSION_MAJOR > 0 || \
./finch/gntsound.c:369: (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR > 10) || \
./finch/gntsound.c:370:  (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && GST_VERSION_MICRO >= 10))
./finch/gntsound.c:546:#if GST_CHECK_VERSION(1,0,0)