* Sys_Dialog for more user friendly error reporting

* (bug #3932) Recovery from bad video settings

code/sys/sys_local.h

@@ -54,3 +54,6 @@ void Sys_PlatformInit( void );
 void Sys_SigHandler( int signal );
 void Sys_ErrorDialog( const char *error );
 void Sys_AnsiColorPrint( const char *msg );
+
+int Sys_PID( void );
+qboolean Sys_PIDIsRunning( int pid );