(svn r5946) -Add: merged the TGP branch to mainline. TGP adds:

- New optional landscape generator (TerraGenesis Perlin)
  - Load heightmaps (either BMP or PNG)
  - Progress dialog while generating worlds (no longer a 'hanging' screen)
  - New dialogs for NewGame, Create Scenario and Play Heightmap
    - Easier to configure your landscape
    - More things to configure (tree-placer, ..)
  - Speedup of world generation
  - New console command 'restart': restart the map EXACTLY as it was when you
      first started it (needs a game made after or with this commit)
  - New console command 'getseed': get the seed of your map and share it with
      others (of course only works with generated maps)
  - Many new, world generation related, things
  - Many internal cleanups and rewrites
  Many tnx to those people who helped making this:
     Belugas, DaleStan, glx, KUDr, RichK67, Rubidium, and TrueLight (alfabetic)
  Many tnx to those who helped testing:
     Arnau, Bjarni, and tokai (alfabetic)
  And to all other people who helped testing and sending comments / bugs
  Stats: 673 lines changed, 3534 new lines, 79 new strings

video/win32_v.c

@@ -9,6 +9,7 @@
 #include "../variables.h"
 #include "../win32.h"
 #include "../window.h"
+#include "../genworld.h"
 #include "win32_v.h"
 #include <windows.h>
 
@@ -792,7 +793,7 @@ static void Win32GdiMainLoop(void)
 			 * real key is in the upper 16 bits (see WM_SYSKEYDOWN in WndProcGdi()) */
 			if ((_pressed_key >> 16) & WKC_TAB &&
 #endif
-			    !_networking && _game_mode != GM_MENU)
+			    !_networking && _game_mode != GM_MENU && !IsGeneratingWorld())
 				_fast_forward |= 2;
 		} else if (_fast_forward & 2) {
 			_fast_forward = 0;