SVR4 awk from October, 1989 (according to main.c)

Downloaded from the first OpenSolaris release in May, 1996.

More recent OpenSolaris versions at
https://hg.openindiana.org/upstream/illumos/illumos-gate/file/626936c65627/usr/src/cmd/awk
Merge branch 'master' of https://github.com/ericfischer/one-true-awk