Simplify the ownership model for DiagnosticClients, which was really
convoluted and a bit leaky. Now, the Diagnostic object owns its
DiagnosticClient.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111437 91177308-0d34-0410-b5e6-96231b3b80d8
10 files changed