/usr/lib/clang/3.4/include is in libclang-common-3.4-dev 1:3.4.2-13.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/clang/3.4/../../llvm-3.4/lib/clang/3.4.2/include
/usr/lib/clang/3.4/../../llvm-3.4/lib/clang/3.4.2/include