abstract query representations from QueryParser

abstract query representations from QueryParser

When you perform a search, you now also get back an abstract
representation of your search query.  fts-replacement.pl is a test
script that shows you things that QueryParser does, including the new
abstract query feature, and it also reconstitutes a string from the
abstract query to demonstrate the correctness of that query.

[Also]
Make last-wins true for facets, filters and modifiers -- arg!; Parameterized values win in the staged-search QP wrapper

Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>