first-stage/README: minor updates
swig/RerankingParser.py: make reranking a method on n-best lists
Also more error checking during parsing.
first-stage/PARSE/parseIt: Fix and simplify chart and sentrep deletion
second-stage/programs/features/combine-feature-counts: Add option for setting threshold, sort features so NLogP is first
Initial version of the regression test suite.
This includes several sets of new sentences to test various aspects of the
parser and reranker.
first-stage/PARSE/ewDciTokStrm: More tokenizer simplification
In general, the tokenizer doesn't modify its input text as much.
It no longer adds extra periods before right parens when no parens had
been seen before.
It also no longer tokenizes "Ain't" as "Ai" + "n't" (instead, it will
be tokenized as "Ai" + "n't").
Add Apache 2.0 license to several Python scripts