[telephony/baresip] added WANTLIB

Apparently by the time I was finalizing this port my tree was inconsistent
with packages and I didn't want to build ffmpeg, so I left out WANTLIB until
everything becomes consistent again. Fixed now.
[multimedia/mediainfo] refactored port

multimedia/libmediainfo and multimedia/mediainfo shared a lot of build
instructions. I splitted out common instructions and placed both ports under
common directory.

Also added port for wxWidgets UI of MediaInfo, though it apparently lacks in
functionality.

--HG--
rename : multimedia/libmediainfo/Makefile => multimedia/mediainfo/libmediainfo/Makefile
rename : multimedia/libmediainfo/distinfo => multimedia/mediainfo/libmediainfo/distinfo
rename : multimedia/libmediainfo/patches/patch-Project_GNU_Library_configure_ac => multimedia/mediainfo/libmediainfo/patches/patch-Project_GNU_Library_configure_ac
rename : multimedia/libmediainfo/pkg/DESCR => multimedia/mediainfo/libmediainfo/pkg/DESCR
rename : multimedia/libmediainfo/pkg/PLIST => multimedia/mediainfo/libmediainfo/pkg/PLIST
rename : multimedia/mediainfo/Makefile => multimedia/mediainfo/mediainfo/Makefile
rename : multimedia/mediainfo/distinfo => multimedia/mediainfo/mediainfo/distinfo
[telephony/re] fast and dirty update to 0.4.7
[telephony/rem] fast and dirty update to 0.4.5
[telephony/baresip] fast and dirty update to 0.4.10