GROOVY-6128
possibility to generate stubs in custom encoding
generating stubs in java source encoding by default
GROOVY-6128
if not specified, stub generator uses platform charset
GROOVY-3298: Support multiple labels on the same statement
GROOVY-6822: Rewrite the JsonBuilder implementation
GROOVY-6822: Added javadoc for constructors.
Added constructor with parent classloader and CompilerConfiguration
[GROOVY-6890] NamespaceBuilder(Support): allow automatic detetection of namespaces declared in attributes
introduce primative testcases for new builder docs
Merge branch 'master' of https://github.com/jnorthr/groovy-core
chg module name to avoid namespace collision
Fixed bug GROOVY-6778

The string "-d" is being used to escape dashes. Thus, converting all dashes to "-d" must be the first replacement that is done (it was) and converting them back must be the last (it wasn't). The bug resulted in the following erroneous conversion:

"-n" -> "-dn" -> "-n" -> "?"
GROOVY-6836: If joint compilation is active *and* that @CompileStatic is used with @Immutable, metaclasses are mixed
groovy-ant part of PR#456
GROOVY-6969: Set.flatten() should return Set
Merge pull request #493 from yukoba/SetFlatten

GROOVY-6969: Set.flatten() should return Set
GROOVY-6970: Type checker should be able to choose between two equivalent interface methods
GROOVY-6849: In case of ambiguity, type checker should be able to choose between an extension method and an interface method
Added missing documentation to BenchmarkInterceptor.java
Added javadoc comments to several Meta* classes
Fixed compilation warnings for javadoc
GROOVY-6971: try to improve performance of GeneratedMetaMethod.Proxy#proxy()