New feature on the way

A common complaint I get is that xia2 does not use e.g. all 4 cores in a 4 core machine. Well, it does if you tell it with -parallel N where N is e.g. 4. So anyway, xia2 should be clever, so the next release will figure out how many cores (if you don't tell it) and use all of them by default.

Tidy.