Add STAT_MATCHSTARTTIME, send out clock synch @ connection (by dimman)

Always send STAT_MATCHSTARTTIME upon client/spec connecting and also
set and send it at MatchStart(). This way the client clock will always
get synched directly upon connection, not having to rely on serverinfo
status change (taking up to a minute to synch).
Merging miha-x86 changes

Removed unsafe features