[MP] Fix GVM_ClientBegin with new API passing false to allowTeamReset.
This was a regression from how it was originally in the old api.
Removed allowTeamReset from GVM_ClientBegin, but still pass qtrue to mod code in new api.
[MP] Add missing sv_gameapi.h to cmake.
[libpng] Update libpng to 1.6.10
[SP] Don't print an error message on an empty server command string.
[SP] Make info cmd not check for userid since only single player.  Remove (now) unused SV_SetPlayer function.
[MP] Add missing break to CG_RegisterCustomSounds
[MP] Add support for pressing 5 (spot air) cmd in the voice menu if the item exists.
[MP] Added note to Q_CleanStr and Q_StripColor about being mutable.
[MP] Fix issues with buf not being freed in FS_CopyFile.
[MP] Init fs_reordered to qfalse.
[MP] Remove colors from hostname in /status.
[MP] Add bot count to infoResponse.
[MP] Cleanup SDL backspace and ctrl+letter handling
[SP] Cleanup SDL backspace and ctrl+letter handling
[SP] Merged several SDL input fixes from MP.
[MP] SDL input compile fixes.
[SP] SDL input compile fixes.
[SP] JK2: Fix snapshot_t being misaligned
[MP] Cleanup bot count addition to SVC_Info, remove warning for uninit var 'bots'.
[JK2SP] Add missing breaks.