Changed the handling of variadic intrinsics a bit. Removed the -fp80 option and made real be 80bit floats on X86, this is what the D spec really says it should be and fixes a bunch of issues. Changed the handling of parameter attributes to a bit more generalized approach. Added sext/zext attributes for byte/short/ubyte/ushort parameters, fixes #60 . Parameter attribs now properly set for intrinsic calls if necessary. Made the tango.math.Math patch less intrusive. Fixed/added some mini tests.

module throw1;

extern(C) int rand();

class C
{
}

void func(bool b)
{
    if (b)
        throw new C;
}

int main()
{
    bool b = true;
    try
    {
        func(b);
    }
    catch(Object)
    {
        return 0;
    }
    return 1;
}