Added support for cmake to gen-module.bash.
update-qt-creator.bash temporarily adds files from $/cmake-test.
Shelled cmake modules.
Cleanup pass for cmake-mswin.bash.

- Generated files now go into a temp dir, which is removed at exit.
- Lots of comment updates.
Fixed description of how to source vcvars.bash.
Added misc function cmake module.
CMake correctly detects host and target env on windows.
cmake: Worked through os, working on compilers.