Progress on the nsInterfaceInfoManager typelib loader for xpconnect.
Now has complete (I think) functionality, though the implementation is
still probably rusty.
I punted on defining a directory for .xpt files at this point; the
implementation looks at the value of the XPTDIR environment variable
for this value.
Note that the nsXPTParaminfo interface (public/xpt_cpp) has changed
(possibly temporarily) to take an 'entry' parameter.
git-svn-id: svn://10.0.0.236/trunk@23485 18797224-902f-48f8-a5cc-f745e15eee43