Add 'ns_returns_not_retained' and 'cf_returns_not_retained' attributes to
match 'ns_returns_retained' and 'cf_returns_retained' respectively.  These
are not yet hooked up to the static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96535 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed