[CMake] default CMAKE_BUILD_TYPE under Windows??

[Ronan Collobert]

Hey,

   I am using CMake under Linux/MacOS X/Cygwin and lately with 
Windows+Windows SDK (cmake -G "NMake Makefiles")

On all platforms, I used to set a default myself to CMAKE_BUILD_TYPE if 
the user did not.

Unfortunately, on Windows with NMake, CMAKE_BUILD_TYPE is set by cmake 
to "Debug". (A simple CMakeLists.txt containing the line 
MESSAGE(${CMAKE_BUILD_TYPE}) is enough to check that on your own 
system). Weird. I cannot put my own default. Any comments on that?

(I am using the last cmake 2.4.7 .exe archive available for download)

Thanks.
Ronan.