Child classes didn't have access to parent's configuration. This is kind
of crude (if geocoder_options not defined, see parent) but it works.

Conflicts:
	lib/geocoder.rb

Conflicts:
	lib/geocoder.rb

Were not returning correct results for reverse or IP address geocoding.

Figures out whether query is an IP address so you don't have to.

Prevents things like: " , ,  , United States".

Show all globally-supported attributes in a table.

Also alias as #province and #province_code.

On input and output (expects/returns lon,lat instead of lat,lon).

Hash order needs to be preserved so with Ruby 1.8 we use a
BSON::OrderedHash instead of a generic one.

Mongoid is not technically an ORM (they call it an "Object Document
Mapper"), and we might support other such storage mechanisms in the
future.