message: Improve wording of warning message.
diff: @@ -2158,17 +2158,18 @@ TypeSystem *Target::GetScratchTypeSystemForLanguage(
  .GetFilename()
  .AsCString();
  if (m_use_scratch_typesystem_per_module)
  - errs->Printf(
  - "\nnote: Swift header search options for %s conflict with "
  - "options found in other modules. Symbols from other modules "
  - "may not be available.",
  - module_name);
  - else
  + errs->Printf("\nnote: Swift compiler options for %s "
  + "conflict with options found in other modules;\n"
  + " Switching to a new expression evaluator for "
  + "%s, old $R variables are lost.\n",
  + module_name, module_name);
  + else {
  errs->Printf("Shared Swift state for %s has developed fatal "
  "errors and is being discarded.\n",
  module_name);
  - errs->PutCString("REPL definitions and persistent names/types will "
  - "be lost.\n\n");
  + errs->PutCString("REPL definitions and persistent names/types "
  + "will be lost.\n\n");
  + }
  errs->Flush();
  }
  }
  