Update sudo pacakge to 1.7.5.

* pkgsrc change: trying to use user-destdir.

What's new in Sudo 1.7.5?

* When using visudo in check mode, a file named "-" may be used to
  check sudoers data on the standard input.

* Sudo now only fetches shadow password entries when using the
  password database directly for authentication.

* Password and group entries are now cached using the same key
  that was used to look them up.  This fixes a problem when looking
  up entries by name if the name in the retrieved entry does not
  match the name used to look it up.  This may happen on some systems
  that do case insensitive lookups or that truncate long names.

* GCC will no longer display warnings on glibc systems that use
  the warn_unused_result attribute for write(2) and other system calls.

* If a PAM account management module denies access, sudo now prints
  a more useful error message and stops trying to validate the user.

* Fixed a potential hang on idle systems when the sudo-run process
  exits immediately.

* Sudo now includes a copy of zlib that will be used on systems
  that do not have zlib installed.

* The --with-umask-override configure flag has been added to enable
  the "umask_override" sudoers Defaults option at build time.

* Sudo now unblocks all signals on startup to avoid problems caused
  by the parent process changing the default signal mask.

* LDAP Sudoers entries may now specify a time period for which
  the entry is valid.  This requires an updated sudoers schema
  that includes the sudoNotBefore and sudoNotAfter attributes.
  Support for timed entries must be explicitly enabled in the
  ldap.conf file.  Based on changes from Andreas Mueller.

* LDAP Sudoers entries may now specify a sudoOrder attribute that
  determines the order in which matching entries are applied.  The
  last matching entry is used, just like file-based sudoers.  This
  requires an updated sudoers schema that includes the sudOrder
  attribute.  Based on changes from Andreas Mueller.

* When run as sudoedit, or when given the -e flag, sudo now treats
  command line arguments as pathnames.  This means that slashes
  in the sudoers file entry must explicitly match slashes in
  the command line arguments.  As a result, and entry such as:
user ALL = sudoedit /etc/*
  will allow editing of /etc/motd but not /etc/security/default.

* NETWORK_TIMEOUT is now an alias for BIND_TIMELIMIT in ldap.conf for
  compatibility with OpenLDAP configuration files.

* The LDAP API TIMEOUT parameter is now honored in ldap.conf.

* The I/O log directory may now be specified in the sudoers file.

* Sudo will no longer refuse to run if the sudoers file is writable
  by root.

* Sudo now performs command line escaping for "sudo -s" and "sudo -i"
  after validating the command so the sudoers entries do not need
  to include the backslashes.

* Logging and email sending are now done in the locale specified
  by the "sudoers_locale" setting ("C" by default).  Email send by
  sudo now includes MIME headers when "sudoers_locale" is not "C".

* The configure script has a new option, --disable-env-reset, to
  allow one to change the default for the sudoers Default setting
  "env_reset" at compile time.

* When logging "sudo -l command", sudo will now prepend "list "
  to the command in the log line to distinguish between an
  actual command invocation in the logs.

* Double-quoted group and user names may now include escaped double
  quotes as part of the name.  Previously this was a parse error.

* Sudo once again restores the state of the signal handlers it
  modifies before executing the command.  This allows sudo to be
  used with the nohup command.

* Resuming a suspended shell now works properly when I/O logging
  is not enabled (the I/O logging case was already correct).

(taca)