Fix #314835, reported by marcoBauli: Make collapsibility work again. I had accidentally broken this while fixing notices.  Additionally, collapsible now works on single-location forms.

Forward port the comments added to the backport of commit 139463. The scary part is that merge actually did the right thing.

Geocoding options now save.

when there are multiple location form inputs.

when 'Location Fields' fieldset is rendered in q=admin/content/node-type/[node-type]

Fix RSS namespace issues.

Allow hiding arbitrary fields on display. (Forward port of commit 138847)

Add the concept of "virtual fields" to fix the "Module declared field without empty default" error for good.
#287220 by scottgifford, nicholasThompson: Fix regeocoding on removal of user submitted coordinates.

Fix country overriding.
Remove some dead code.
Fix default value for 'additional' field.

Add a per-country template suggestion to the preprocess.

#287216 by scottgifford, bdragon: Manipulate locations by reference when geocoding so later modules can make use of the data.

Rip out the notion of "supported countries." With the dynamic country loading, this isn't really needed.
This breaks some of the "province listing" stuff, but it needed work anyway.