s/SIMPLEQ_/STAILQ_/g STAILQ_* macros seems to be more widespread than SIMPLEQ_*

error also if `tls pki' is missing

add flags to listener; warn if missing auth_table in the future we'll have also plain 9p, so mark the tls listeners with L_TLS and add the libtls machinery only in that case.

avoid redefining symbol `listen' on some version of bison there's an issue since we have a rule `listen' and a variable `listen'.

don't require strict ordering in listen + table misc

initial commit