Update sudo pacakge to 1.7.7.  It is maintenance release.

What's new in Sudo 1.7.7

* I/O logging is now supported for commands run in background mode
  (using sudo's -b flag).

* Group ownership of the sudoers file is now only enforced when
  the file mode on sudoers allows group readability or writability.

* Visudo now checks the contents of an alias and warns about cycles
  when the alias is expanded.

* If the user specifes a group via sudo's -g option that matches
  the target user's group in the password database, it is now
  allowed even if no groups are present in the Runas_Spec.

* "sudo -i command" now works correctly with the bash version
  2.0 and higher.  Previously, the .bash_profile would not be
  sourced prior to running the command unless bash was built with
  NON_INTERACTIVE_LOGIN_SHELLS defined.

* Multi-factor authentication is now supported on AIX.

* Added support for non-RFC 4517 compliant LDAP servers that require
  that seconds be present in a timestamp, such as Tivoli Directory Server.

* If the group vector is to be preserved, the PATH search for the
  command is now done with the user's original group vector.

* For LDAP-based sudoers, the "runas_default" sudoOption now works
  properly in a sudoRole that contains a sudoCommand.

* Spaces in command line arguments for "sudo -s" and "sudo -i" are
    now escaped with a backslash when checking the sudoers file.

(taca)