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 aa3;

extern(C) int printf(char*, ...);
alias char[] string;

void main()
{
    int[string] aa;
    {aa["hello"] = 1;}
    {int* p = "" in aa;}
    aa[" worl"] = 2;
    aa["d"] = 3;
    aa["thisisgreat"] = 10;
    int sum;
    string cat;
    {
    foreach(k,v;aa)
    {
        printf("int[%.*s] = %d\n", k.length, k.ptr, v);
        sum += v;
        cat ~= k;
    }
    }
    assert(sum == 16);
    printf("cat = %.*s\n", cat.length, cat.ptr);
    assert(cat.length == 22);
}