functional base url was not initialized on all code branches.

follow up to: https://github.com/grails/grails-core/pull/451
Merge branch 'baseUrl' of github.com:hauner/grails-core into hauner-baseUrl

Conflicts:
	grails-test/src/main/groovy/org/codehaus/groovy/grails/test/runner/phase/FunctionalTestPhaseConfigurer.groovy