swift234

SILParser: parsing generic code.

Make sure we construct SILFunctionType for generic arguments of BoundGenericEnum.
Otherwise we will have a type mismatch between SILFunctionType and FunctionType.

This commit passes TypeResolutionOptions to a few helper functions:
resolveTypeDecl, applyGenericTypeReprArgs, diagnoseUnknownType

It will enable us to pass TypeResolutionOptions to TypeChecker::applyGenericArguments,
and then pass it to vaildateType, instead of using a hard-coded None.

rdar://14443287


Swift SVN r15152