[PATCH] Allow specifying a custom PathDiagnosticConsumer for use with the static analyzer.

[Jordan Rose]

  I'm not sure why "replace" is the right interface. Wouldn't it be better to just have an AnalysisDiagClients entry for "no default PathDiagnosticConsumers", and then be able to add to them?

  I'm also still not convinced that you really need a //new// PathDiagnosticConsumer, rather than, say, improving the text diagnostics.

http://llvm-reviews.chandlerc.com/D2556