Completion of initial work on FBO support in Java2D/JOGL bridge.

Discovered it was necessary to re-attach the color and depth
renderbuffers to the FBO in JOGL's context, even though it shared
textures and display lists with Java2D's context; this may be a driver
problem and merits further investigation. Found it was also necessary
to create a new depth renderbuffer; apparently could not use Java2D's.
This is almost certainly a driver bug. At this point, with the
forthcoming planned changes to Mustang, JOGL works when
-Dsun.java2d.opengl.fbobject=true is specified. Problems remain with
the HWShadowmapsSimple (extremely slow performance) and
InfiniteShadowVolumes (throws exception because of inability to share
textures and display lists between pbuffer's context with stencil
buffer and Java2D's context) demos. Worked around earlier exceptions
with InfiniteShadowvolumes demo by avoiding sharing textures and
display lists with dummy GLContexts. Changed build to produce DebugGL
and TraceGL earlier so they can be used in e.g. GLJPanel.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@599 232f8b59-042b-4e1e-8c03-345bb8c30851

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