CHERRY-PICK: gl: Bind the default framebuffer before calling gl{Read|Draw}Buffer

Fix more fallout from separating framebuffer binding from setting the
destination. In some cases it is sufficient to call
glDrawBuffer/glReadBuffer before binding the framebuffer, but the
masking-filling-stroking test of cairo-gl-smoke-tests fails if the order
is incorrect.
CHERRY-PICK: gles: Switch default framebuffer destinations properly

Make _cairo_gl_context_bind_framebuffer handle different types of GLES
surfaces properly Since, the multisampling setting of a surface never changes
in for GLES, so the first thing we do when setting the destination is to
ignore the requested multisampling setting. This simplifies all
following logic.