Vendor raptor source files (was embedded gitlink)

Tree vendored at upstream 0019c5dd; origin + license recorded in
raptor/VENDOR.txt. Windows SDL dev packages excluded via .gitignore.

raptor/include/SDL2-devel-2.28.2-VC/SDL2-2.28.2/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