byacc: update to 20220101.

2022-01-01  Thomas E. Dickey  <dickey@invisible-island.net>

* test/run_test.sh:
adjust to ignore NetBSD's difference in getopt warnings.

* package/pkgsrc/Makefile: resync with pkgsrc

* test/yacc/expr.oxout.tab.c, test/btyacc/expr.oxout.tab.c: regen

* test/expr.oxout.y, test/expr.oxout.h: fix gcc warnings

* test/yacc/expr.oxout.tab.c, test/yacc/expr.oxout.tab.h: regen

* test/run_make.sh: workaround for compiling the expr.oxout.y files

* test/expr.oxout.y: fix syntax error

* test/btyacc/expr.oxout.tab.c: regen

* test/expr.oxout.h: RCS_BASE

* test/yacc/expr.oxout.tab.c: fix syntax error

* test/btyacc/expr.oxout.tab.c: regen, s/expr.oxout/expr_oxout/g

* test/btyacc/expr.oxout.tab.h: regen

* test/run_test.sh:
filter the default prefix to change "." to "_", so that the generated
files will compile consistently with run_make.sh

* package/debian/control, package/debian/prerm, package/debian/postinst:
add "byacc2" as an alternative for "yacc"

* package/byacc.spec, package/debian/control, package/debian/rules:
rename "btyacc" to "byacc2" to co-exist with traditional "btyacc" package

(fcambus)