Limit filesystem checks to once every 3 seconds
Limit filesystem checks to once every 3 seconds

bz_eTickEvents happen alot when players are connected.  There's no need
to wail on the operating system every tick just to see if bans have been
updated.  Once every 3 seconds is more than sufficient.

kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1