Bug 675853 - dirsrv crash segfault in need_new_pw()
    
    A bind DN with a trailing tab in the RDN can cause ns-slapd to crash.
    This is ultimately caused by the function that explodes the bind DN
    trimming off the tab character, causing the bind entry to be found
    by the backend.  The frontend uses different logic to find the
    bind entry, which fails to find the entry.  This discrepency leads
    to a crash.
    
    The fix is to only trim trailing spaces (0x20) from RDN values when
    exploding a DN.  The DN explode function is an internal function
    when built against the OpenLDAP client libs, but we use an external
    MozLDAP call when built against MozLDAP.  This patch makes us always
    use our own internal function regardless of the client libs we are
    built against.