+ add --enable-interop to sample package scripts (suggested by Juergen
Pfeifer).
+ update CF_PATH_SYNTAX macro, from mawk changes.
+ modify mk-0th.awk to allow for generating llib-ltic, etc., though
some work is needed on cproto to work with lib_gen.c to update
llib-lncurses.
+ remove redundant getenv() cal in database-iterator leftover from
cleanup in 20120622 changes (report by Sven Joachim).
