[svn r382] In CastExp, after the cast to CastExp.to force the type to be CastExp.type. This is used for c.im for instance, where the cast is to idouble but type is double.

enum
{
    LLVMnone,
    LLVMintrinsic,
    LLVMva_arg,
    LLVMva_start,
    LLVMva_intrinsic,
    LLVMnotypeinfo,
    LLVMalloca
};