refine RevisionIncompatible string

Author: kastiglione

lldb/source/Plugins/TypeSystem/Swift/SwiftASTContext.cpp

@@ -1272,8 +1272,8 @@ static const char *getImportFailureString(swift::serialization::Status status) {
     return "The module file was built with a different SDK than the one in use "
            "to build the client.";
   case swift::serialization::Status::RevisionIncompatible:
-    return "The resilient module file was built by a different version of the "
-           "compiler.";
+    return "The module file was built with library evolution enabled by a "
+           "different version of the compiler.";
   }
 }