* qatar/master:
lavfi: add compand audio filter
Conflicts:
Changelog
doc/filters.texi
libavfilter/Makefile
libavfilter/af_compand.c
libavfilter/allfilters.c
libavfilter/version.h
The filter is added as new one so as to ease clean merging of its changes
in debug-able steps
See: 6b68e2a43b
Merged-by: Michael Niedermayer <michaelni@gmx.at>