Fixed crash if initialization of EGL failed but was tried again later.

The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().

docs/README-pandora.md

@@ -0,0 +1,17 @@
+Pandora 
+=====================================================================
+
+( http://openpandora.org/ )
+- A pandora specific video driver was written to allow SDL 2.0 with OpenGL ES
+support to work on the pandora under the framebuffer. This driver do not have
+input support for now, so if you use it you will have to add your own control code.
+The video driver name is "pandora" so if you have problem running it from
+the framebuffer, try to set the following variable before starting your application :
+"export SDL_VIDEODRIVER=pandora"
+
+- OpenGL ES support was added to the x11 driver, so it's working like the normal
+x11 driver one with OpenGLX support, with SDL input event's etc..
+
+
+David Carré (Cpasjuste)
+cpasjuste@gmail.com