GROOVY-4639: Add isSet()/hasValue()/similar method to ConfigObject
GROOVY-4639: Add isSet()/hasValue()/similar method to ConfigObject

refactored and added java doc
DelegatesTo in AstSpecificationCompiler to help IDE auto-complete
GROOVY-6456: AbstractHttpServlet.applyResourceNameMatcher race condition

converted Patch supplied by Andrej Fink to pull request
GROOVY-6456: AbstractHttpServlet.applyResourceNameMatcher race condition

updated Patch submitted by Andrej Fink
Merge pull request #280 from PascalSchumacher/GROOVY-4639

GROOVY-4639: Add isSet()/hasValue()/similar method to ConfigObject
Merge pull request #294 from PascalSchumacher/GROOVY-6456

GROOVY-6456: AbstractHttpServlet.applyResourceNameMatcher race condition
Merge pull request #285 from bsideup/quickfix/delegates-to-in-astbuilder

DelegatesTo in AstSpecificationCompiler for better IDE autocomplete