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 bug10;
extern(C) int printf(char*, ...);

class C
{
    char[] msg;

    this()
    {
    }
    this(char[] msg)
    {
        this.msg = msg;
    }
}

void main()
{
    auto c = new C();
    c.msg = "world";
    auto b = new C("hello");
    printf("%.*s\n", b.msg.length, b.msg.ptr);
    printf("%.*s\n", c.msg.length, c.msg.ptr);
}