mesa: Make handle_bind_buffer_gen() non-static

...and rename it to _mesa_bind_buffer_gen().

This is so the function can be called from _mesa_BindVertexBuffer().

This patch also adds a caller parameter so we can report the right
entry point in error messages.

Based on a patch by Eric Anholt.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2 files changed