Adopt ABORT throughout the compiler

Convert a bunch of places where we're dumping to stderr and calling
`abort` over to using `ABORT` such that the message gets printed to
the pretty stack trace. This ensures it gets picked up by
CrashReporter.

lib/Serialization/ModuleFileCoreTableInfo.h

@@ -579,8 +579,10 @@ public:
                                Fingerprint::DIGEST_LENGTH};
     if (auto fp = Fingerprint::fromString(str))
       return fp.value();
-    llvm::errs() << "Unconvertable fingerprint '" << str << "'\n";
-    abort();
+
+    ABORT([&](auto &out) {
+      out << "Unconvertable fingerprint '" << str << "'";
+    });
   }
 };