* improve documentation on all defines
* rename modules_dir to module_dir and modules_file to module_file
* create $module_dir_path to achieve DRY-ness
* silence the lsb_release stuff
* improve concatenated_file to use an intermediate file, improving reliability
and decoupling the updateing from notifying our peers.
* remove serveral functions that were moved to puppet proper:
- sha1 => sha1
- gsub,substitute,slash_escape => regsubst
This moves all facts and puppet plugins to the plugins/ directory of modules to
get the benefits of Matt's plugins patch, that distributes these files before
the configuration is requested. This reduces the number of configuration runs to
convergence by one.
