gitolite_config_file not being created in sub-directory

[FlorianMuenchbach]

Hi Nicolas,

first of all, thanks for your support on my other issue. And for the plugin of course ;)
v1.0.0 works like a charm!

I have found another problem. It's not critical, but may lead to some kind of frustration when configuring the plugin.

I have set gitolite_config_file to incl/redmine.conf, gitolite_config_has_admin_key is set to false.
The directory "incl" exists in gitolite-admin.git/conf. There is another file in it, so git wouldn't delete it as an empty directory.

When the plugin updates the configuration, a config file is correctly written directly in gitolite-admin.git/conf. This file is not being added to git but I can see it in the tmp directory.
git status in the plugin's temporary copy shows it as new even after multiple re-syncs.
The plugin complains that it does not find the file, I guess when trying to add the correct path to git (correct as in configured in the frontend):

[...]
[INFO] update_projects : repository 'redmine_repos/test' does not exist in Gitolite, create it ...
[INFO] update_projects : commiting to Gitolite...
[ERROR] Could not find '/tmp/redmine_git_hosting/git/gitolite-admin.git/conf/incl/redmine.conf' to stat: No such file or directory

When I remove the subdirectory from the path in the frontend, the config file is being created directly under gitolite-admin.git/conf and being added to git correctly.
I can live with that, but you maybe want to add a note in the wiki somewhere, too.

This issue might cause some of the behavior mentioned in #327. I can't verify it, since I don't have the old branch anymore.