Moved nsInterfaceInfoManager files from the libxpt directory (where
they would have precipitated an unpleasant circular dependency between
xpidl and nsISupports.h) into a new subdirectory.
Added corresponding entries to allmakefiles.sh.
nsInterfaceInfoManager is intended to abstract the loading and
management of typelib information generated by xpidl, for use by
xpconnect.
git-svn-id: svn://10.0.0.236/trunk@22533 18797224-902f-48f8-a5cc-f745e15eee43
