Set database root password first before setup L&B (L&B setup script tries w/o password first anyway, but this is the better way).
Typo & polishing.
glite-lb-setup manpage polishing.
Support different MySQL/MariaDB database in deployment (fixes issue #22):
- add LBDB parameter to setup script, startup scripts, yaim, and documentation
- support different database connection in DB migration script
- fights with escaping: MYSQL_PASSWORD can contain spaces now, LBDB can have
  spaces in password in all platforms except Debian
- check for forbiden characters in MYSQL_* and LBDB variables in setup script
- use hostname info from LBDB also for admin access to MySQL
- show a notice if database is not on the localhost, but setup local database
  anyway (let's not check if the location is remote)
- read /etc/glite.conf in scripts as well
- limited parsing for --mysql/-m option in GLITE_LB_SERVER_OPTIONS