Ensure source maps use forward slashes. This is needed to avoid confusing chrome, and helps with package hash checks.
Fixes #56
Ensure bundle uses forward slashes, and source banners too.
Make more files use LF line endings (to get consistency with MDG packages)
Make files.renameDirAlmostAtomically() retry a number of times before giving up.
Merge pull request #3 from sdarnell/win0.9.0.1

Win0.9.0.1