Revision also includes:
* Added syntax checking on recoded/new console commands.
* Fixed sv_skyname handle being used when invalid.
* Fixed unhooking error on Weapon_Drop.
* Prefixed some API-style functions with 'stock' to stop compiler
warning.
* Separated downloads into its own file.
Removed log check in fatal errors. Those must always log.
Stored LogCheckFlag result in a boolean where log is executed more than once.
Fixed invalid translation string used in menu title.
Fixed index out of bounds in zspawn when a client disconnects.
Initializing blank strings on function declaration had no effect. Also the parameter can be treated as optional when it's actually not. Reverted to avoid confusion.
