dns-and-server-ref-counts-20040530

dns-and-server-ref-counts-20040530

   * Add debug info to test whether CM_BUF_WAITING or CM_SCACHE_WAITING
     are ever set more than once at a time

   * Fix the management of lists of cm_cell_t structures when using
     DNS to lookup cell information.  The previous code would fail to
     reuse the same cellID for a cell if DNS was used more than once
     for a given cell name.  When the ttl expired, a single cm_cell_t
     could be inserted into the cm_allCellsp list more than once
     producing a loop.  In addition, the vlServerp list belonging to
     the cell was not freed resulting in improper refCounting of the
     servers.

   * Add DNS support to cm_IoctlNewCell() which previous only examined
     the CellServDB file

   * Add cm_FreeServer() function and call it from cm_FreeServerList()
     to properly garbage collect cm_server_t objects

   * Add numVCs variable to smb.c to track the number of smb_vc_t
     objects created and use it to initialize the vcID field which
     previously was set to 0 in all objects resulting in FindByID
     collisions.