Upgrade to Groovy 2.1.2-SNAPSHOT
Fix the file name of the big download bundle
GROOVY-6001: fix distance calculation bug involving interfaces
groovydoc process all annotation refs
fix URL due to junit.org move
additional groovydoc URL fixes
GROOVY-6004: Groovydoc should process annotations more intelligently
GROOVY-6008: Extension methods not found by Gradle when used with @TypeChecked or @CompileStatic