Right-to-left address salvage

[BK01]

Build a right-to-left address salvage mode to acquire a locality matchPrecision level. Utilize salvage mode if the resulting fullAddress is ‘BC’ with a score of 1.

Test case	fullAddress (current state)	fullAddress (future state)
GENERAL DELIVERY 1471 WHI, CEDAR, BC	BC	CEDAR, BC
PO BOX 19675 RPO CTRE/POINT/MALL, VANCOUVER, BC	BC	VANCOUVER, BC
PO BOX 19675 RPO CTRE/POINT/MALL	BC	BC

[cmhodgson]

The implemented solution does not make use of a fallback "salvage mode" but instead adds support for a different parsing that allows for unlimited garbage in front of the locality name but penalizes it hard, which results in the same net effect.

[BK01]

Validated in geocodertst (Geocoder 4.3) that the examples above no longer return a score of 1 with a matchPrecision of Province. The Geocoder's updated parsing handles more garbage in front of the locality name and tries to interpret what remains. To review the above examples again with the team next.