message: Read-write briefcases are to be located by openMode also - this fixes failing briefcase manager tests (if the cache is cleared).
diff: @@ -154,13 +154,9 @@ class BriefcaseCache {
  if (openMode === OpenMode.Readonly)
  return briefcase.changeSetId === changeSetId;
  - return briefcase.changeSetId === changeSetId && briefcase.userId === userId;
  + return briefcase.changeSetId === changeSetId && briefcase.userId === userId && openMode === briefcase.openMode;
  });
  - if (!foundBriefcase)
  - return undefined;
  -
  - assert(foundBriefcase.openMode === openMode, "Error locating the briefcase with the correct mode");
  return foundBriefcase;
  }
  