Add ability to control casing of normalize output

[robe]

Right now its hard to compare pagc_normalize_address and normalize_address because pagc always outputs in upper case and normalize generally maintains casing.

This switch is addition to geocode_settings called:

casing_address is new geocode_settings that will be an integer

1 - keep output as is (whatever comes out) 2 - upper case 3 - apply init caps