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 foreach5;
extern(C) int printf(char*, ...);
void main()
{
    int[3] arr = [1,2,3];

    foreach(v;arr) {
        v++;
    }

    printf("%d\n", arr[0]);
    assert(arr[0] == 1);
    assert(arr[1] == 2);
    assert(arr[2] == 3);

    foreach(ref v;arr) {
        v++;
    }

    printf("%d\n", arr[0]);
    assert(arr[0] == 2);
    assert(arr[1] == 3);
    assert(arr[2] == 4);
}