Two small bugfixes: - See through typedefs and enums in passByVal - Don't depend on TypeFunction::parameters->dim being the actual number of parameters; it contains unexpanded tuples as single elements.

enum
{
    LLVMnone,
    LLVMintrinsic,
    LLVMno_typeinfo,
    LLVMno_moduleinfo,
    LLVMalloca,
    LLVMva_start,
    LLVMva_copy,
    LLVMva_end,
    LLVMva_arg,
    LLVMldc
};