[analyzer] RetainCountChecker: add support for CFAutorelease.

<rdar://problems/13710586&13710643>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192113 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] ArrayRef-ize BugReporter::EmitBasicReport.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192114 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC: Warn when 'readonly' property has explicit
ownership attribute (such as 'copy', 'assign' etc.)
// rdar://15131088


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192115 91177308-0d34-0410-b5e6-96231b3b80d8