[packages] net/freeswitch: Use /usr/share/freeswitch as prefix; this means freeswitch...

[packages] net/freeswitch: Use /usr/share/freeswitch as prefix; this means freeswitch files not in bin, lib, or include will be stored under /usr/share/freeswitch.
  Modify the configuration so that recordings are stored on /var/lib/freeswitch/recordings by default (this is a tmpfs so should be change if persistance is needed).
  Allow the scripts and htdocs to have their directories set individually instead of requirings them to be under /usr/share/freeswitch.

git-svn-id: svn://svn.openwrt.org/openwrt/packages@22783 3c298f89-4303-0410-b956-a3cf2f4a3e73