add script for migrate database
fix spaces before EOF
refactor bash syntax for xivo-upgrade-db
add xivo-database-migration scripts to xivo-upgrade
some message changes
fix minor spelling and grammar errors
force the locale en_US when installing pg9.1

postgres is installed with a default of sql_ascii as default encoding
when launched from xivo-upgrade without this commit
Merge branch 'auto-1-pg_upgrade'