o stay_setuid - sudo will remain setuid if system has saved uids or setreuid(2)
o env_reset - reset the environment to a sane default
o env_keep - preserve environment variables that would otherwise be cleared
No longer use getenv/putenv/setenv functions--do environment munging by hand.
Potentially dangerous environment variables can be cleared only if they
contain '/' pr '%' characters to protect buggy programs.
Moved environment routines into env.c (new file)
There's really no need for a separate token for fully-qualified vs.
unqualified anymore so FQHOST is now history and hostname_matches
now decides which hostname (short or long) to check based on whether
or not the pattern contains a '.'.
changable at runtime (and on a global, per-host and per-user basis).
Both the names and the internal representation are still subject to change.
It was necessary to make sudo_user.runas but a char ** instead of a
char * since this value can be changed by a Defaults line. There is a
similar (but more complicated) issue with sudo_user.prompt but it
is handled differently at the moment.
Add a "-L" flag to list the name of options with their descriptions. This
may only be temporary.
Move some prototypes to parse.h
Be much less restrictive on what is allowed for a username.
where an alias may be used before it is defined. Only turned on for visudo
and testsudoers.
o Add --disable-authentication option that makes sudo not require
authentication by default. The PASSWD tag can be used to require
authentication for an entry. We no longer overload --without-passwd.
