If you used LDAP and NOPORTDOCS then the documentation directory would be
left behind on install. The upstream Makefile would create the directory
and put sudoers2ldif there, but pkg-plist would not register it properly.
This fix moves sudoers2ldif to 'bin' since it isn't really documentation.
It's installation is still controlled by the LDAP knob though.
Spotted by: scheidell@