Fix undefined symbol: clock_gettime

[SM] Extension dbi.mysql.ext.so failed to load: /home/csgo/csgo/addons/sourcemod/extensions/dbi.mysql.ext.so: undefined symbol: clock_gettime
Allow Steam IDs in Steam3 format for sm_addban
Fix typo causing compile error strcmp -> strncmp
Update windows CS:GO CheckWinLimit signature
Fix OnTakeDamage_Alive gamedata lookup in SDKHooks.
Fix build.
Merge pull request #162 from alliedmodders/steam3-bans

Allow Steam IDs in Steam3 format for sm_addban (r=asherkin).
Merge pull request #164 from VoiDeD/sp-commandline

Expose ICommandLine to plugins.
Merge pull request #156 from Bara20/patch-2

Fix undefined symbol: clock_gettime.
Fix build.
Update Fistful of Frags gamedata.
Add transitional syntax support for regex.inc.
Merge pull request #168 from alliedmodders/tr-regex

Add transitional syntax support for regex.inc.
Update TF2 gamedata.
Merge branch 'master' of https://github.com/alliedmodders/sourcemod
Revert accidental reverting of tf-regex merge.
Merge remote-tracking branch 'upstream/master'