FreeSWITCH-FS-6836

Merge pull request #34 in FS/freeswitch from ~RTRELEAVEN/fs-6773:fs-6773 to master

* commit 'a159b58790cf980df375faa5a55fb713faf257c5':
  fix missing "/" in path
  add support for cache directory make configs use specific directory variables instead of just base_dir so that one configuration can be used for fhs and legacy installations