freetdm: ss7 - bug fix for call-resume and call-suspend handling, added isup interface option for lpa_on_cot

freetdm: ss7 - switch back to sending RSC at startup rather then GRS

set idle pattern to 255 instead of 0 to prevent clipping sound on short frames from mod_native_file FS-2772

freeswitch.spec moved to support freetdm instead of openzap including hooks to compile with libsng_isdn and wanpipe. Added mod_silk, mod_codec2 mod_cidlookup, mod_mp4v. Added runtime requirements and build dependencies. This one is a major change