#4 Patching the md5-code

[Mikhail T.]

The patch addresses a compiler-warning -- the function-pointer md5_50_variant was declared without specifying arguments. It also changes msgLen from unsigned int to size_t -- which should allow for inputs in excess of 4Gb.

Finally, I remove the const from the integer scalars, where the qualifier does not make sense.

The benchmark, actually, improves a little after this.

I took the liberty of adding this patch to the FreeBSD port of pdfcrack already.

[Henning Noren]

pdfcrack-0.21 has been released with the patch included. Thanks!