The object list becomes too long, and rejected by some linkers. Shorten the...

The object list becomes too long, and rejected by some linkers.  Shorten the list by using (PLATFORM)/*.o instead of (XML_OBJ_DIR)/*.o


git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@173909 13f79535-47bb-0310-9956-ffa450edef68