Fix MACAddress items (e.g. additionalMACs and pendingMACs and mac fields to always be an object of MACAddress rather than an object of it's associated class.  This should allow the __toString() function to work properly.  Fixes || [ "$osid" == "7" ] to be && [ "$osid" == "7" ] as is appropriate in the inits for OSID Verification.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1800 71f96598-fa45-0410-b640-bcd6f8691b32