driconf: Add translation-generation to build system, don't track generated files

driconf: Add translation-generation to build system, don't track generated files

Previously, the xmlpool directory had a lone Makefile to assist poeple in
manually invoking a deep make in order to update the translations in
options.h. We can observe that this wasn't happening in fact, (new
translations had been added to de.po without being generated into options.h,
and new options had been manually added directly to options.h rather than to
t_options.h).

Prevent both of these problems from occurring in the future by automatically
generating options.h as part of the standard build of mesa.

For this, the generated options.h is now removed from version control, (along
with Makefile in favor of Makefile.am).

[chadv: Port the Autotools changes to Android.]
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>