* rewrite of the win32 dedicated console:

1) NET_Sleep() no longer watches for input, Sys_Sleep() added for waiting
     on input.
  2) Added "CtrlHandler" for trapping Ctrl-C and other quit methods not
     handled by signals on windows
  3) Added history support
  4) Added tab completion
  5) Removed automatic cursor/scroll adjustment (too problematic)
  6) Enable mousewheel scrolling
  7) Stop using the InputBuffer for editing

  This seems to work pretty well now, but I jumped the gun on a previous
  commit message by saying you can scroll now without locking up your server.
  That was only true up until the point that a server tried to print to
  the console, at that point it will hang until you release the scroll bar :(
  It may be possible to get around this by using a seperate thread for
  console output, but that's a whole new can of worms.

code/sys/sys_win32.c

@@ -508,3 +508,20 @@ void Sys_FreeFileList( char **list )
 
 	Z_Free( list );
 }
+
+
+/*
+==============
+Sys_Sleep
+
+Block execution for msec or until input is recieved.
+==============
+*/
+void Sys_Sleep( int msec )
+{
+	if( msec < 0 )
+		WaitForSingleObject( GetStdHandle( STD_INPUT_HANDLE ), INFINITE );
+	else
+		WaitForSingleObject( GetStdHandle( STD_INPUT_HANDLE ), msec );
+}
+