FS-5498 add profile-variables section to directory to specify profile variables to be set automatically

Since there isn't neutral ground, on the rtmp state callback we actually have to force the write lock of the session, but we only need a try lock on removing the session from the rsession->session_hash. This removes a deadlock caused when we had to enforce with locks that the rsession couldn't be destroyed if the FS session was in the middle of a hangup.

Seems having a read lock still prevents a write lock to be taken, even if the thread that is trying to get the write lock currently has the read lock.

tweak windows esl managed - removing mixed mode and any from the solution - this should remove some of the ambiguity around building

Patch provided by: Spencer Thomason

Implement appropiate caller/called TON in ftmod_libpri