[Gnash-dev] plugin update

[Rob Savoye]

I just checked in an update to the "real" plugin. Mike had made some 
good changes and pushed me off in the right direction about handling the 
X11 and GL contexts. So after a day of reading up on OpenGL, I threw out 
the SDL part of the plugin, and did everything in straight GLX/OpenGL. 
SDL was causing some problems, and it's not barely used anyway by the 
player except for event handling. For the plugin, it has to use gtk 
event handling anyway, so SDL is unnecessary.

This version draws the same old boring triangle and square with one huge 
difference, it now handles multiple instantiations of the plugin class 
correctly. I was using http://www.doonesbury.com/ as a test case, since 
it loads multiple movies on the same screen. These now all correctly get 
the hardcoded graphic in the right place and the right size. More 
importantly, it's totally stable now.

Now that I've got the hang of locking contexts, I'm hoping it'll be 
easier to figure out what's happening when I enable the player. 
According to what I read all this locking is probably a performance 
issue, but I'll worry about optimizing everything once it works.

        - rob -