Add test that NMake works with CMake. Closes #1069.
Add Building.which() function to help find a tool in PATH. Use mingw32-make instead of the nonexistent 'make' with cmake on Windows if mingw32-make is found in PATH. Helps with issue #695.
Skip nmake test in test_cmake on Windows if PATH doesn't have nmake set up.
Fix previous merge.
Update docs on test.
Fix indentation in Building.which() function.
Add missing 'if WINDOWS' in CMake toolchain handling code.
Merge pull request #1605 from juj/mingw32make_nmake_cmake

Mingw32make nmake cmake