FS-5395: False alarm on a reported valgrind memory leak. The io_private is alloc'd from a memory pool which valgrind sucks at tracking. No need to free this, because it'll get cleared when the memory pool on the rsession is destroyed.

FS-5395: --resolve Resolve another mod_rtmp crash where oh specific hangup scenarios there would be a free of variable that wasn't ever malloced

FS-5085 I discovered that the bowout is happening from both legs at once, we only need to check this condition on the A side of the loopback bridge

This reverts commit d8edc031.

Conflicts:
	src/mod/endpoints/mod_rtmp/mod_rtmp.c

FS-4875 auto setting ignore_early_media causes unwanted side effects for others, it will have to be supplied by the user

FS-5358 --resolve use allow-transcoding=true param in global settings or fifo_allow_transcoding=true channel var on per caller basis

Conflicts:
	src/mod/applications/mod_fifo/mod_fifo.c

Conflicts:
	src/mod/endpoints/mod_sofia/mod_sofia.h