- remove unused non-working patches and framework for chan_h323;
this driver is deprecated upstream anyway.
- add patches to let the alternative chan_ooh323 addon module build.
currently unused in the port, 'make configure; cd $WRKSRC; gmake menuselect'
and enable it there if you want to play.
- sync unistim patch.
- mention the IMAP flavour in DESCR (and thus bump REVISION-main).