Revert "Continue only if the last test-compilation worked."

This reverts commit 06068bbad415eb0624eaede1e2a7377edb42a897.
Merge topic 'cxx98-features' into next

641e8b2a Revert "Continue only if the last test-compilation worked."
Features: Add cxx_template_template_parameters.

Extend the existing feature infrastructure as needed to support
both C++11 and C++98 features.
Merge topic 'cxx98-features' into next

a36b957f Features: Add cxx_template_template_parameters.