Updated tooling (kindof) for 3.0.0 reversion
[CB-3177][CB-3176] remove <plugin> support per deprecation policy.
Updated cordova.js snapshot
[CB-4385] tooling fix for when path to project has spaces
[CB-4350] the unix script needs to be executable to execute it.
adding wp7 exec bits to check_reqs.
Fix for check_reqs error when msbuild did not exist in path
CB-4421 Fix for XHR to local files, can now be relative to current page, as expected