Don't unpack mysql verbosely

I doubt we're interested in the filename of every single file
contained in the mysql archive when it's decompressed.

It bloats up the travis build log.
Disable nextmap on Insurgency.
Update TF2 gamedata.
Update TFCond enum for Mannpower
Denote TFCond multiples of 32 consistently
Merge pull request #232 from FlaminSarge/tf_mannpower_conds

Update TFCond enum for Mannpower.
Merge pull request #230 from peace-maker/mysql_unpack_spam

Don't unpack mysql verbosely in checkout-deps.sh.
Add new and remove old gamerules gamedata for numerous games.
Gamedata cleanup.
Fix build.
Disable FireOutput detour on Windows for Dota for now.
Revert "Disable FireOutput detour on Windows for Dota for now."

This reverts commit a7c9aff56854f1147656b91188f713ed2c610fd8.
Merge remote-tracking branch 'upstream/master'
Prevent null auth string comparisons.