[REQUIREMENT FOR 1.1] Rework on import, include, redefine

Description:

   1. Make namespace restrictions/implications more consistently
      among the constructs

        <xs:import/>
        <xs:include/>
        <xs:redefine/>

   2. Do not import elements/types/etc in redefine which are not
      explicitly "redefined"

   3. Allow to import/include elements/typs/etc selectively using
      an optional xpointer-expression

Michael

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   PENTAPRISMA TECHNOLOGIES GmbH
   www.pentaprisma.com

     Michael Grübsch

     phone:  +49 (361) 4262-266
     fax:    +49 (361) 4262-261
     mailto: michael.gruebsch at pentaprisma.com
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