mac needs version number but linux does not
fix linux and mac debug builds
We were formatting ccflags wrong on windows.
Moving the version stuff from common to version.py

In preparation for adding a generated version header.
Adding a SCons function for generating a version header

Uses mustache code-gen

Generated header contains version #, commit hash, and boolean
indicating the presence of local modifications.
Adding a basic hook_settings.py (see T-R for documentation)
Merge branch 'master' of github.com:makerbot/mw-scons-tools into InternalRelease