initscripts: use debian 6.0 skeleton

recreate Debian and Ubuntu init scripts based on Debian/Ubuntu skeleton file.
Advantages:
- use standard skeleton
- "status" is now implemented and working, see bug #50
- start order: if a database is installed, it is started before the bareos-director
- Debian and Ubuntu are using the same init scripts
- bareos-dir, bareos-sd and bareos-fd are based on the same skeleton and differ only at the variables values
Changed:
- Debian standard skeleton utilise the VERBOSE variable.
  By default, VERBOSE equals "no" and init script are completly quiet.
  We follow this standard, even so we don't like it.
  This behavior can be changed by setting "VERBOSE=yes" in /etc/defaults/rcS

Signed-off-by: Marco van Wieringen <marco.van.wieringen@bareos.com>