Rename Libyan Arab Jamahiriya to Libya
Add GEOIP_CITY_EDITION_REV1_V6
Require the libGeoIP 1.5.0
Add libGeoIP tests for version 1.5.0
Add method GeoIP_currency_by_code
Make GEOIP_CHARSET_ISO_8859_1 the default for the perl API

GEOIP_CHARSET_ISO_8859_1 is the default for perl, since UTF8 is 2x slower
and perl does the right thing anyway, even if the output layer is utf8
Doc fixes
Update timezones
Update region codes
Fix merge conflict
Add South Sudan