hooks for getenv, putenv, setenv and unsetenv. This makes it
possible for the plugin to trap changes to the environment made by
authentication methods such as PAM or BSD auth so that such changes
are reflected in the environment passed back to sudo for execve().
Bump the minor number accordingly and update the documentation. A
plugin must check the sudo front end's version before using the
plugin_args parameter since it is only supported for API version
1.2 and higher.
Add iolog_file and iolog_dir parameters to command info.
This allows the policy plugin to specify the I/O log pathname.
Add convenience functions for calling plugin functions that
handle ABI backwards compatibility.
