Run autoreconf in ilmbase

It turns out I was modifying an automake file, whoops!
Add openexr at 1.7.0
Fix cross pkg-config in openexr
Fix openexr manifest
Fix a cross compile error (autogenerated header)
Add nm-applet-0.9.8.8-r2

I need to make a GTK2 port of this.
Port nm-applet-0.9.8.8-r2 to GTK2