doxygen command. Add 'attention' command to list of similar
doxygen commands. // rdar://12379053


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176127 91177308-0d34-0410-b5e6-96231b3b80d8
No need to initialize these variables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176128 91177308-0d34-0410-b5e6-96231b3b80d8