set a channel var if the recording is terminated due to silence hits

* commit 'cfb7e3d1':
  FS-7732 follow recording on other session

Merge pull request #304 in FS/freeswitch from ~ANDEE/freeswitch:bugfix/FS-7734-mod_nibblebill-doesn-t-release-mutex to master

* commit '5c7f0bc0':
  FS-7734 fixed mutex lock that should be an unlock

follow recording on other session

OPENZAP-237 #resolve

FS-7679 #resolve #comment please test, also added some cases of calling a file with no video as well

FS-7723 #resolve change RPMs to use -ncwait instead of -nc. This will cause the initscript to pause and wait for FS to be ready before continuing.

fix build/freeswitch.init.redhat since redhat likes to override settings in the script with TAGs in comments

* commit '208c3cfe':
  FS-7722 fixed issue with record_session including params when creating path

FS-7720 improve play_and_detect_speech to set current_application_response channel variable as follows:

    "USAGE ERROR": bad application arguments
    "GRAMMAR ERROR": speech recognizer failed to load grammar
    "ASR INIT ERROR": speech recognizer failed to allocate a session
    "ERROR": any other errors

  This is useful for determining that play_and_detect_speech failed because the recognizer is out of licenses
  giving the developer a chance to fall back to traditional DTMF menu navigation.

add images to spec file