[CMake] MSYS and MinGW

[Bill Hoffman]

I have just checked in two new generators for CMake.
If you cvs checkout cmake, you will find the following
new generators:

  MSYS Makefiles              = Generates MSYS makefiles.
  MinGW Makefiles             = Generates a make file for use with
                                mingw32-make.
The MSys makefiles are for using the make and /bin/sh
that comes with msys to do the build.  The MinGW makefiles
are for using mingw32-make and the windows command shell.
Also, the problem with running CMakeSetup from the Start menu
and make crashing has been fixed, so you do not have to run
CMakeSetup from an special shell or environment.  MinGW and
MSYS are not even required to be in the PATH.

-Bill