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 terms;

void f()
{
    int i = 42;
    if (i > 25)
        return;
    if (i < 25) {
        return;
    }

    if (i > 100)
        return;
    else
        return;

    if (i < 1000) {
        return;
    }
    else {
        return;
    }
}

void main()
{
    int i = 42;
    if (i > 25)
        return;
    if (i < 25) {
        return;
    }

    if (i > 100)
        return;
    else
        return;

    if (i < 1000) {
        return;
    }
    else {
        return;
    }
}