Clang as default compiler

[Alexander Yerenkow]

How about run automated test on two poudriere setups, one with CLANG set
up, other with USE_GCC=4.2 applied to all ports which marked as broken,
and find in pretty long but relatively easy way ports which should have
USE_GCC=4.2 to survive clang-era, and ports which even with that require a
bit more love?

Is there somewhere list of these clang-failing ports? I think some mass
testing could be organized by little efforts.

-- 
Regards,
Alexander Yerenkow