Make executable preinst script. (wtf)
Remove fancy print for globaleaks at startup.

During initialization, globaleaks print output in different colors, giving (if
not wrong) useless informations. I am suppressing this output to make my job
easier when testing globaleaks services.
Remove warning for non-precise distributions.

This no more holds, and furthermore makes the script fail with set -e.
Quiet postrm.

Remove useless sorry informations when globaleaks gets removed.
Move globaleaks configuration to postrm.
Removing superficial code already added by debhelper in maintainer scripts.

* Working again for ubuntu with packer, yay!
* This removes the last lintian error on the current globaleaks package:
  "E preinst-calls-updaterc.d"
Remove now empty globaleaks.preinst script.

Fixes lintian warning: W: globaleaks: maintainer-script-empty preinst