v7.0

A big thanks to @hectoras for providing these changes.

• Allow parts of the init script to run in batch mode and/or in parallel:
  • Create tables: ./init.pl --action=2 --ask=0
  • Download mbdump: ./init.pl --action=10 --ask=0
  • Uncompress mbdump: ./init.pl --action=11 --ask=0 --bzip="/usr/bin/pbzip2 -m10240 -p16 -r -v" --pipe-bzip=1 --parallel=1. Note at the moment pbzip2 can't make use of all cores when decompressing because of the format of the mbdump files created by MuscBrainz.
  • Load data: ./init.pl --action=4 --ask=0
• After that, you can continue the database creation using the 5, 6 & 7 init.pl options from the interactive menu (indexing, foreign keys creation, plugins initialization).