927b0ef Fixing compiler warnings in the posix-winsync plugin

Authored and Committed by Noriko Hosoi 11 years ago
    Fixing compiler warnings in the posix-winsync plugin
    
    The commit b9eeb2e1a8e688dfec753e8965d0e5aeb119e638 for Ticket #481
    "expand nested posix groups" introduced these compiler warnings.
    
    1) posix-grou-func.c
    . added missing format strings "%s" in searchUid.
    . added a function declaration hasObjectClass.
    . replaced an obsolete api escape_filter_value with slapi_escape_
      filter_value.
    . eliminated an unused variable uid_dn_value.
    2) posix-group-task.c
    . replaced an obsolete api escape_filter_value with slapi_escape_
      filter_value.