Don't use a protocol function dependent on InspIRCd protocol >= 1205
As InspIRCd inserts a TS for metadata messages arriving from < 1205 servers,
we can't use >= 1205 features without letting InspIRCd know what protocol version to use.
Merge pull request #224 from ShutterQuick/atheme+inspmdfix

Don't use a protocol function dependent on InspIRCd protocol >= 1205