Update GlobeCoordinateValue

* Renamed GeoCoordinateValue to GlobeCoordinateValue
* Removed altitude field
* Made precision field required
* No longer acceept null for the globe field
* Take a LatLongValue object rather then lat and long parameters

This is a breaking change for users, so the following commits need to be merged soon after this one:

* https://gerrit.wikimedia.org/r/#/c/79994/
* https://gerrit.wikimedia.org/r/#/c/79995/

Change-Id: Iae1251f7fd6cae626582f6be0f9acb3f1cff93f2