Merge pull request #1205 in FS/freeswitch from ~MOCHOUINARD/freeswitch:bugfix/FS-10093-allow-to-specify-a-spool-path-for to master

* commit '8fa52b5c':
  FS-10093: Add fax-spool variable to select the rxfax spool destination per call AND automaticly try to create the folder if it doesn't exist