(svn r7279) -Codechange: [win32] Add Windows95/98 support by using MSLU. Only workaround is that the
wide version of EnumDisplaySettings crashes on win95 no matter what, so use ANSI version.
NOTE: MSLU support is only added to VS2003 project file because VS2005 compiles won't
even run on Windows95.

(svn r7278) -Codechange: [win32] Add UNICODE support so it should compile on OS's using UNICODE
API exclusively.

(svn r7157) -Fix [FS#221, SF1168820]: Some mouse events possibly lost under high CPU load, handle
mouse input right away instead of waiting for GameLoop. (KUDr)

(svn r7156) -Codechange: Remove obsolete variable, localize global variable, use GB and change logic
of the win32: TAB speeds up, but ALT+TAB doesn't code.

(svn r7153) -Fix [FS#279]: Some keyboard events possibly lost under high CPU load, handle
keyboard input in place instead of global variables magic. (KUDr)

(svn r7137) -Codechange: [win32] Use windows function in main loop to check if we have pressed ALT
(for ALT+TAB) instead of magic global _pressed_key from input-loop. (KUDr)

(svn r7062) -[win32] Codechange: Remove unneeded WM_MOUSEENTER event, and change mouse behaviour
a bit so that any specific windows inside (eg IME compositor) will have a cursor.

(svn r7060) -Fix (r5874): Restore of window maximized state not always working (Mart3p) . Remember
maximize state even between switching fullscreen/windowed mode.

(svn r6380) -Codechange: unify all ways to quit OTTD.
This means that in the intro menu the 'Quit' button immediatelly quits
and the 'Quit' in the menu of the normal game and scenario editor
immediatelly quits when the 'autosave_on_exit' patch is turned on.
This is the same way as the OS/window manager initiated quits, like
alt-F4 and the 'x' in the (OS/window manager drawn) title bar of OTTD.

(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