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 bug50;
extern(C) int printf(char*, ...);

struct S
{
    int i;
    float f;
    long l;

    void print()
    {
        printf("%d %f %lx\n", i, f, l);
    }
}

void main()
{
    S s;
    s.print();
    s = S(1,2,3);
    s.print();

    S[] arr;
    {arr ~= s;}
    {arr[0].print();}
    {arr ~= S(1,2,3);}
    {arr[1].print();}
}