Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc

Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc openssl rpcgen rpcinfo sdiff spell ssh
string2key telnet tn3270 verify_krb5_conf xlint

show more ...

WARNS=3

replace guts of opencd() with call to opendisk(). prevents coredump
when a device with a leading / (e.g, `/dev/cd0') is given, as well as
promotes code reuse ;-)

cdplay now uses libedit!

'cdplay', a simple utility for playing compact disks with both a command line
and an interactive mode.