script for splitting services into parts
refactor into individual files

Split files in service.d into multiple (log|destination|filter).d
files each.
remove service.d folder support

As this "feature" is not part of the default syslog-ng scl setup it
has to die.
cleanup, remove splitter script

The script has done what it was meant for. Since it will not be
needed on production I'm deleting it. If you have more service.d
files to convert you may find it in 4519a45a099799c303d4e4684d8762eb0a049e66A.