Update chefdk-win project to match *nix changes
Fix build issues for chefdk on win (WIP)

NB: this is pretty rough and probably breaks existing projects
(chef-client). Needs to have configurable behavior for generating batch
file wrappers for chef executables at minimum.
Pull in latest omnibus-sofware w/ win chefdk fixes
Change ruby-windows back to 1.9.3 w/ override for chefdk
Remove bundler from top-level, this was a bad attempt at a bug workaround
Remove commented bundle install code
Update omnibus-software for bundler dep fix
Move md5 override for ruby-win to software defn.
Workaround issue cause by conflicting PATH environment variables

cmd.exe can have both a PATH and a Path environment variable; setting both
causes unpredictable behavior. We work around this by detecting the
correct path variable to override in shell_out commands.
update omnibus software to pull in cmd.exe related fixes