FS-7656 fix various edge cases with video and non video files mixed into a source, fix a typo bug in file_read_video and fix same bug in mod_vlc, add a new flag to file_read_video to check if the handle is has active video, make mod_conference move the video in and out of a layer when the stream has video or not

* commit '81190c6d':
  FS-7644. Fix build on VS2013/Win by creating and forcing nf (nofork) to true.
  FS-7644. Remove non-existent projects.
  FS-7644. Add switch_core_video.c and switch_vidderbuffer.c to VS2013 FreeSwitchCore.2013.vcxproj
  FS-7644. Change 2013.vcxproj references to 2013

Merge pull request #284 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus_debugging_audiobandwidth to master

* commit '595bba20':
  FS-7660: mod_opus: add function to show information about Opus payload (number of frames, number of samples per frame, audio bandwidth, FEC info). Enabled with new API command "opus_debug".

* commit '53759ff1':
  FS-7628: Fixed name of Erlang naming daemon

Revert "FS-7669 #resolve now if you don't have the /etc/freeswitch directory, we will install the default packages for you. If you already have this directory, we'll let you deal with your own configs."

This reverts commit 5550f37f.

This reverts commit 157cac97.

FS-7669 #resolve now if you don't have the /etc/freeswitch directory, we will install the default packages for you. If you already have this directory, we'll let you deal with your own configs.

FS-7660: mod_opus: add function to show information about Opus payload (number of frames, number of samples per frame, audio bandwidth, FEC info). Enabled with new API command "opus_debug".