Change all strcmps to strncmp in siglevel code.
Update the synopsis in the ALPM::DB doc.
Fix typos on ALPM::Package docs.
Fix typo in ALPM::DB description.
Be more specific in ALPM::DB::Sync::siglvl desc.
Remove old siglvl tests that will fail from 00-ALPM.t
Fix wrong siglvl test desc in 00-ALPM.t.