LockClock: detect default units based on locale

US, Malasia, and Sri Lanka are the only countries
which still use imperial units, so do not use
metric units as defualt if possible.

Change-Id: Ie3d7de33fc3120926a5871b3814f488b145cd464
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge branch 'CyanogenMod/cm-11.0'

Conflicts:
	src/com/cyanogenmod/lockclock/preference/WeatherPreferences.java