Requirements:
	* MSYS
	* svn: http://subversion.tigris.org/servlets/ProjectDocumentList?folderID=8100&expandFolder=8100&folderID=91
		The .zip with the client .exe's.
		
	* some gunwin32 utils:
		* http://gnuwin32.sourceforge.net/packages/cygutils.htm
		* http://gnuwin32.sourceforge.net/packages/zip.htm
		
		You *NEED* *BOTH* the Binaries *AND* the Depedencies packages for both.
		
	Note: the above are all required for `make bundle_zip` to work
	
	Install msys to \foo\msys\1.0.
	Unzip the above .zip packages to \foo\msys\1.0\local (so the .exe's and .dll's go into local\bin)
	
Setup:
	build.bat provided for convenience, you can hardcode the paths to your \foo\msys\1.0\bin;\foo\msys\1.0\local\bin
	there if you want to, or set up your windows PATH properly.
	
Usage:
	Place build.sh and build-msvc90.bat in the same dir. Run build.sh (or use build.bat to run it).
	
	See `build -h` for usage and available options/environ vars.
	
	Output goes to $CWD/build/openttd-foo-rXXXX.*