feature request: include dir for csync2.cfg

[olevole]

it would be cool to be able to split csync2.cfg into peaces (e.g. per-group) to be able to write something like:

nossl * *;

//other global params

include_dir /etc/csync2.d/*.cfg;

and manage /etc/csync2.d/*.cfg configuration files instead of single/monolithic;