Finally sync this with the authors.ent file.

So, what will this buy us?

1. No more boring work on this file, as it will be updated "automatically" when a new committer makes his first commits. I'll add a note to the committer's guide soon, saying that new committers should add themselves to this file.

2. All names will be synchronized. There were some differences between developers.sgml and authors.ent before, for example:
   • developers.sgml: Andrew Reiter
   • authors.ent: Andrew R. Reiter
   • developers.sgml: Christian Peron
   • authors.ent: Christian S.J. Peron
     
     This should be fixed now however.

Reviewed by: remko, danger