Added missing files from gst-plugins-base0.10_0.10.34 package

[mafwsubrenderer] / gst-plugins-base-subtitles0.10 / m4 / README

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.