Import nawk 2000/11/15, try #2.
This is the original New AWK from AT&T Labs as described in "The
AWK Programming Language", by Al Aho, Brian Kernighan, and Peter
Weinberger.

This would eventually replace gawk in our tree in future.
Import nawk 2000/11/15.

These files are not used for build, but are usable when one want to regenerate
proctab.c
Import nawk as of 2003/07/29
Changes:
* internationalization improvements
* [:digit:] addition
* some bugfixes
Update to nawk-20050424. Fixes several overflow and RE bugs, as well as
preserving $0 in END block.
from: http://cm.bell-labs.com/cm/cs/awkbook/index.html
imprort latest nawk
from http://www.cs.princeton.edu/~bwk/btl.mirror/