Fix Short-Description in pdns-recursor.init.d

S-D is used to display what's going on in at least some init systems,
so make it a bit more descriptive.
Remove --bare from zone2sql man page

This option does not exist.
Remove unused pathconfig files

Apparently from 1.x binary installer area.
Remove unused precursor init script

There's another one in pdns_recursor.init.d, which is the one that's
actually distributed.
Remove duplicate README file
Remove old TODO files
Remove duplicate INSTALL file
Merge pull request #1056 from zeha/f/stuff

Miscellanea