Update for msys2 windows compilers

[ksubrama]

Description

Allows windows to use the msys2 framework and install a recent msys2 base mingw-w64 compiler.

Check List

• [x] All tests pass. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/TESTING.MD
• [x] New functionality includes testing.
• [x] New functionality has been documented in the README if applicable
• [x] The CLA has been signed. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/CONTRIBUTING.MD

[ksubrama]

@tyler-ball @btm

[tyler-ball]

I reviewed the current code - just waiting on tests and docs

[ksubrama]

This should now have tests and docs.

[schisamo]

@ksubrama you'll need to rebase this onto master before we can do final review.

[ksubrama]

Ah and everything got refactored in the mean time :-P. Thankfully, it still seems to work :)

[ksubrama]

@tyler-ball helped me fix the inspec tests!