v0.15.1

This was supposed to be a minor clean up... and it turned out to be quite big:

• 29 commits;
• 16 files changed, 276 insertions(+), 267 deletions(-).

Diff statistics

What happened?

• build/init scripts were cleaned;
• added stop() function to zram{,dir} init scripts
  instead of relying to some localmount init script magic;
• edited init script headers to use the same header as other scripts;
• cleaned the license (mess-)choice to use only 2-clause BSD;
• functions clean up & fixes: raid should be functional now.

Quite a big change, hence the long files/commits change.