Merge pull request #121 from randen/windows-1

Refactoring in preparation for Windows build
missing return value in cabal.wrap
update to use GHC 7.8.3 - and bumped HP name to 2014.2.0.0
Merge pull request #122 from randen/windows-1

Add support to build HP for Windows 32- and 64-bit
Remove brokenness from hptool.cabal file

(I think this didn't fail in my build since for
WIndows, I am not building the source dist.)