Updated runtest to always rebuild libtangobos-partial.a in case of updates. Changed std.stdarg to import ldc.vararg so it has the correct implementation.

void main()
{
    float m[4][4];

    float* fp = &m[0][0];
    for (int i=0; i<16; i++,fp++)
        assert(*fp !<>= 0);
}