glapi: Fix scons build

Put the -c in the correct place (and match Makefile.am).

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76960
Tested-by: Vinson Lee <vlee@freedesktop.org>
Signed-off-by: José Fonseca <jfonseca@vmware.com>
st/wgl: Remove wgl*Gallium*MESA().

These were only used by the Python state tracker, which was removed, hence
they have no practical use.

Reviewed-by: Brian Paul <brianp@vmware.com>
docs: Add note about updating tests to dev info

Signed-off-by: Timothy Arceri <t_arceri@yahoo.com.au>