more security hacking (avoiding bogus newlines in strings)

eliminate unnecessary declaration

eliminate unnecessary declaration

fix security problem allowing bogus lines to be written to qf file
from command line or IDENT protocol by embedding newlines

fix security problem: avoid newlines in command line or IDENT input

give X-Authentication-Warning: on -f flag unless user is trusted

cut at 20 January version of DSN document

test for using Hesiod

always compile IDENTPROTO in; just default the timeout to zero if
it doesn't normally work on some system. This is to avoid having
to recompile sendmail when a kernel patch comes out.

diagnose unknown options (on a debug flag)

Timeouts => Timeout

syntax error fix

generalize queue order configuration

compile glitch

implement DialDelay option

fix typo

more DSN hacking

improved debugging

improve DSN handling somewhat + some bug fixes

compile glitches

set UseNameServer on the basis of whether "dns" is in the service switch

allow dotted option names

allow per-mailer default character set (applies to INCOMING mailer)

first cut at service switch abstraction

avoid core dumps in rewrite() if the "null RHS" diagnostic is given