Update to June GeoIP2 database
[geoip-jun2015](https://gitweb.torproject.org/karsten/tor.git/log/?h=geoip-jun2015) contains the updated `geoip` file with IPv4 ranges and is supposed to be merged into maint-0.2.3.
[geoip6-jun2015](https://gitweb.torproject.org/karsten/tor.git/log/?h=geoip6-jun2015) contains the updated `geoip6` file with IPv6 ranges and is supposed to be merged into maint-0.2.4 (the first maint-* branch that contains a `geoip6` file).
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