Re: [boost] [1.50] [Config] Enhancing support of -fno-rtti on clang

If Boost would like to enhance the support of -fno-rtti on clang, it would be good to merge the fix into the release branch.

I ran the test runner (clang trunk with -fno-rtti) for unpatched release branch and patched release branch. There was no regression and more than 1000 test results got improved.

Thanks, merged to release. John.