[m-dev.] New lexer module, lex, checked into extras

[Ralph Becket]

You are invited to try it out...

Estimated hours taken: 20

Added a new lexer module to extras.

extras/lex/Mmakefile:
extras/lex/README:
extras/lex/lex.m:
extras/lex/lex.automata.m:
extras/lex/lex.buf.m:
extras/lex/lex.convert_NFA_to_DFA.m:
extras/lex/lex.lexeme.m:
extras/lex/lex.regexp.m:
extras/lex/samples:
extras/lex/samples/Mmakefile:
extras/lex/samples/demo.m:
        Added.

--
Ralph Becket      |      MSR Cambridge      |      rbeck at microsoft.com 
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