[PM] Fold all three analysis managers into a single AnalysisManager

template.

This consolidates three copies of nearly the same core logic. It adds
"complexity" to the ModuleAnalysisManager in that it makes it possible
to share a ModuleAnalysisManager across multiple modules... But it does
so by deleting *all of the code*, so I'm OK with that. This will
naturally make fixing bugs in this code much simpler, etc.

The only down side here is that we have to use 'typename' and 'this->'
in various places, and the implementation is lifted into the header.
I'll take that for the code size reduction.

The convenient names are still typedef-ed and used throughout so that
users can largely ignore this aspect of the implementation.

The follow-up change to this will do the exact same refactoring for the
PassManagers. =D

It turns out that the interesting different code is almost entirely in
the adaptors. At the end, that should be essentially all that is left.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225757 91177308-0d34-0410-b5e6-96231b3b80d8

tools/opt/Passes.h

@@ -17,12 +17,10 @@
 #define LLVM_TOOLS_OPT_PASSES_H
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/IR/PassManager.h"
+#include "llvm/Analysis/CGSCCPassManager.h"
 
 namespace llvm {
-class CGSCCAnalysisManager;
-class FunctionAnalysisManager;
-class ModuleAnalysisManager;
-class ModulePassManager;
 
 /// \brief Registers all available module analysis passes.
 ///