Style guideline fixes

Comply better with puppet community style guidelines.

Change-Id: Ie1782d266539b1a8f9890b2ade77280011aa22aa
Merge pull request #18 from dalen/master

A patch to make puppet-concat better comply with community style guidelines.
Update temporary files even when running in 'noop' mode
Suppress log messages when updating temporary files
Properly execute 'concatfragments.sh' even when '$concatdir' is mounted with 'noexec' flag