ENH: add filter freeswitch - as raised on mailing list
BF: port not used in jail definition for freeswitch
ENH: more filter expressions for freeswitch. Anchored existing one at end too
DOC: ignoreip for internal ips on freeswitch
BF: catchin DEBUG messages will result in duplicates
MRG: merge in freeswitch
DOC: bit more on how to use freeswitch