fix for GRAILS-10793 "On Windows, grails v2.3.2 or 2.3.3 (new project) adding BuildConfig dependencies results in plugin errors. Works on 2.3.1!"
Merge branch '2.3.x' of github.com:grails/grails-core into 2.3.x

Conflicts:
	grails-bootstrap/src/main/groovy/org/codehaus/groovy/grails/resolve/PluginResolveEngine.groovy