[CMake] Fail to Compile cmake on OSX 10.4

[Bill Hoffman]

Can you start with a clean build tree, and run make VERBOSE=1.

The trouble is happening here:

 > Source/kwsys/CMakeFiles/cmsys.dir/SystemInformation.o
 > Linking CXX static library libcmsys.a
 > ar: temporary file: No such file or directory
 > make[2]: *** [Source/kwsys/libcmsys.a] Error 1
 > make[1]: *** [Source/kwsys/CMakeFiles/cmsys.dir/all] Error 2

Sounds like ar is not creating the .a file correctly for some reason.

-Bill