/usr/lib/clang/3.6.0/include is in libclang-common-3.6-dev 1:3.6-2ubuntu1~trusty2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/clang/3.6.0/../../llvm-3.6/lib/clang/3.6.0/include
/usr/lib/clang/3.6.0/../../llvm-3.6/lib/clang/3.6.0/include