Remove hardcoded database name ("geo") so that the configured database name actually applies consistently.

Ensure tables are created with "IF NOT EXISTS" so that a restarted import doesn't barf with "table already exists" errors.
Remove hardcoded database name (geo) so that the configured database name actually applies consistently. Basename import file paths so that the import progress is easier to parse with human eyes. Apply default values for placetype during preferred name and alias population (todo: check default config values between 5.1.67 and 5.6.17 of MySQL)
.DS_Store files begone!