124338: assure sorted mark containers when updating <SwIndex> instances due to inserted characters



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1574058 13f79535-47bb-0310-9956-ffa450edef68
123480: correct the previous made refactoring (revision 1572577)



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1574101 13f79535-47bb-0310-9956-ffa450edef68