This fixes the following errors during do_install on hosts which have
latex and/or dvips installed:
fmt_latex2e::postASP: LaTeX first run problem. Aborting ...
dvips: ! DVI file can't be opened.
Our goal is to have native versions of these tools eventually. Until
then, disable these parts of the documentation install process.
This fixes [BUGID #774].
Signed-off-by: Scott Garman <scott.a.garman@intel.com>
