updated metamodel test with latest interfaces #1126
metamodel #1126: added metamodel util type in symtab and method to invoke it in AT
metamodel #1126: implement type and member literals
tests for type and member literals #1126
metamodel tests #1126: updated annotations tests to latest API
annotations tests #1126: updated to latest super syntax
metamodel #1126: added runtime literal tests
updated tests that now fail due to ceylon/ceylon-spec#596
updated interop tests now that ceylon/ceylon-spec#625 is mostly implemented
model loader: another fix for member enum constructor reflection
RecognizedOptions: allow the default module without checking for its existence
tests: enabled back the last test for ceylon/ceylon-spec#625