Fixing incorrect memset size in game/trap_Trace

The memset is attempting to zero the entire incoming trace_t, but ends up only zeroing the first 4 or 8 bytes of it (depending on the arch).
Merge pull request #73 from swillits/master

Compiler warnings etc.
general: fixed inaccurate Q_IsColorString(), fixes #412

Thanks to swillits
misc: update for translation files, refs #244
cgame: allow to translate OBJECTIVES
added the default ET ttf font files, if built with FT support there will be used by default
misc: use lowercase for fonts files
game: avoid ever increasing playing time on debriefing screen, refs #478
Merge pull request #74 from swillits/fix_trace

Fixing incorrect memset size in game/trap_Trace