* Rename voip cvar to cl_voip

* s/#if USE_VOIP/#ifdef USE_VOIP/
* Add generalised runtime cvar range checking, currently on [sv|cl]_voip,
  dedicated and a bunch of r_ variables

code/renderer/tr_public.h

@@ -131,6 +131,7 @@ typedef struct {
 
 	cvar_t	*(*Cvar_Get)( const char *name, const char *value, int flags );
 	void	(*Cvar_Set)( const char *name, const char *value );
+	void	(*Cvar_CheckRange)( cvar_t *cv, float minVal, float maxVal, qboolean shouldBeIntegral );
 
 	void	(*Cmd_AddCommand)( const char *name, void(*cmd)(void) );
 	void	(*Cmd_RemoveCommand)( const char *name );