This is to make sure all of libssl's consumers' have sufficiently
reasonable toolchains. Once this bakes, we can go about moving
libssl to C++.
This is just starting with libssl for now because libcrypto has more
consumers and libssl would benefit more from C++ than libcrypto (though
libcrypto also has code that would benefit).
BUG=132
Change-Id: Ie02f7b0a8a95defd289cc7e62451d4b16408ca2a
Reviewed-on: https://boringssl-review.googlesource.com/13161
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
