Reworked the exported APIs.

New APIs:
	MH_QueueEnableHook, MH_QueueDisableHook, MH_ApplyQueued.
Removed APIs:
	MH_EnableAllHooks, MH_DisableAllHooks, MH_EnableMultipleHooks, MH_DisableMultipleHooks.
Changed APIs:
	MH_EnableHook, MH_DisableHook (changed to accept a NULL parameter).
Version bump