Original commit message from CVS: Revert the revert to 1.0.0 vorbis.m4 code. This bugfix has been accepted upstream to fix a segfault due to a bogus function parameter. (the cause of the segfault should probably be fixed but until then...)
All aclocal .m4 files we need are put here and cat'd to acinclude.m4 in the source root. Official ones (taken from the relevant devel packages) are named as-is, unofficial ones (or changed ones) get a gst-prefix.