Reorganization of parser modules.  parser/__init__.py includes:   - ParserI (from parser.py)   - ShiftReduceParser (from srparser.py, srparser_template.py)   - RecursiveDescentParser (NEW)
Reorganization of parser modules.  parser/__init__.py includes:
  - ParserI (from parser.py)
  - ShiftReduceParser (from srparser.py, srparser_template.py)
  - RecursiveDescentParser (NEW)


svn/trunk@634

nltk/nltk,nltk/nltk,nltk/nltk