#9 Section <include> improvements

[artegz]

1. Currently it is possible to use system properties in property values. It would be great to be able to use system properties also in 'name' attribute of <include> tag (and probably in some other places).

2. It would be nice to have 'optional' attribute for <include> tag. If it's set to 'true' then included config may not exists.

3. Currently parser process 'include' properties before 'sections' properties, so 'sections' properties override same properties from 'include'. It will be useful to make overriding behavior configurable - to be able to override 'sections' properties with 'include' properties' somehow.

I would suggest a patch where first two points have been implemented (see attachment).