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.

import tango.io.Console;

class C
{
    this()
    {
        Cout("C()").newline;
    }
    this(char[] str)
    {
        Cout("C(")(str)(")").newline;
    }
}

class D : C
{
    this()
    {
        super("D");
        Cout("D()").newline;
    }
}

void main()
{
    auto c1 = new C();
    auto c2 = new C("C");
    auto d = new D();
}