Merge pull request #263 from garbear/remember_location2

Added: XBMC remembers the weather location

The current area code is now persistent and stored in the settings as a 1-indexed integer. For consisteny, the related code treats any area code references as 1-indexed as well (both internally and externally via builtins).

Additionally, some #defines have been cleaned up and consolidated to reduce code duplication.

diff --cc xbmc/settings/GUISettings.cpp
Simple merge