[CMake] BUILD_TESTING=OFF breaks CVS CMake build

[Zachary Pincus]

Hello,

I just attempted to build a recent (e.g. now) CVS checkout of CMake  
with the BUILD_TESTING option off.

The build breaks trying to compile CMake/Source/kwsys/ 
testSystemTools.cxx because CMake/Source/kwsys/testSystemTools.h.in  
never gets configured to create a valid testSystemTools.h without the  
BUILD_TESTING option. (See CMake/Source/kwsys/CMakeLists.txt lines  
627-637.)

The bigger problem may (or may not) be why testSystemTools.cxx is  
being compiled at all when BUILD_TESTING is off.

As a workaround (and probably the right thing to do anyway), turning  
BUILD_TESTING back on fixes things.

Zach Pincus

Program in Biomedical Informatics and Department of Biochemistry
Stanford University School of Medicine