ncm-glitestartup: remove LC::Check usage for directories

[jouvin]

#56 replaced LC::Check calls by CAF for the management of files. But 2 LC::Check calls are still present, to manage a directory. The alternative to LC::Check is not clear:

• LC::Check::directory can probably be replaced by File::Path::make_path, despite it is not clear from the documentation that it doesn't raise an error if the directory already exists...)
• LC::Check::status applied to a directory allows to modify owner/group/perm of an existing directory: suggested replacement by File::Path doesn't allow it (File::Path does not modify metadata of an existing directory)

Do we need a CAF::FileStatus module that will implement status for directory? See quattor/CAF#69 for the discussion on this topic...

Suggestions welcome...