Prevent renderers from drawing with unbound textures

Prevent renderers from drawing with unbound textures

Changed Texture::Bind to return success/failure instead of Created/NotCreated

If the texture is not created, e.g. a NativeTexture calling out to
NativeImageInterface::GlExtensionCreate() fails for some reason, then
the Bind call will now return false to indicate that it failed.

The renderers now check the result of the Bind call, and do not draw if it is
false. This prevents the screen showing black rectangles for unbound textures.

Change-Id: I8e4c81f43a8b73b05cccdbf7799cf5ef0c8722c4
Signed-off-by: David Steele <david.steele@samsung.com>