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
Expose some of ICommandLine to plugins.
Fix linux build.
Allow Steam IDs in Steam3 format for sm_addban
Fix typo causing compile error strcmp -> strncmp
Number -> Int, per recommendation.
Whoops, forgot my hat.
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.