GDK / GroovyDoc restyling: additional tweaks so both documentations are coherent style-wise
Merge pull request #372 from glaforge/gdk-groovydoc-tweaks

GDK / GroovyDoc restyling: additional tweaks so both documentations more coherent style-wise
GROOVY-6678: XmlParser should provide a trimIgnorableWhitespace setting
GROOVY-2115: text() method on NodeChild with XmlSlurper returns composite. Need just local text. Provides a localText() method.
minor refactor: add @since versions for localText() methods
GROOVY-6666: fix accidental forced primtive unwrapping for boolean
GROOVY-6471: another try to bypass the AccessControlException on GAE
minor refactor: improved localText() for groovy.util.Nodes
minor refactor: improved localText() for groovy.util.Nodes
GROOVY-6671: Incorrect handling of wildcards in return type inference, part 1