Bootstraping the language module: added a way to reset certain things in Javac
BaseFileObject: got rid of NPE
CeylonEnter: when bootstraping, reset the compiler state after generating the Ceylon AST and restart Enter
CeylonModelLoader: genrate class AST skeleton for bootstrap for ceylon AST
LanguageCompiler: for the purpose of bootstrapping, treat Java files as Ceylon files (allow multiple inheritance of same interface)
AbstractModelLoader: handle ceylon.language, Bottom and singletons when bootstrapping
MiscTest: added true/false as exceptions when bootstrapping ceylon.language
MiscTest: made boostrapping ceylon.language not verbose
Added JCTypeResetter to reset the Javac AST
LanguageCompiler: make sure whatever packages we compile when bootstrapping end up in the language module

rather than in the default module, for stuff like com.redhat.ceylon runtime util packages
Made ant task less verbose by default