eggaccelerators.{c,h}: Cleanup whitespace and names
Update README
Update README
Clean-up of finding the lowest lock instance

The code had a number of issues: it used slist_append, which is O(n),
making the list construction O(n**2). Finding the lowest lock was also
done in a rather non-elegant way.

Anyways, the whole list construction was needless anyway, because one
could just save the lowest lock instance integer while iterating over
the locks.

Fixes #43
Fix: Cleanup of finding lowest lock instance

 * Actually the last commit was wrong. We need to find the _highest_ number
   of the available lock files and then add one to that value, to return
   the lowest _available_ instance number. The code in the previous
   commit would only work, if there are at most two tilda instances
   open.
 * Fixes #43