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68cebcd8 - libtextstyle: Use less code from libxml.

libtextstyle: Use less code from libxml. * libtextstyle/gnulib-local/lib/libxml/xmlversion.in.h.diff: New file. * gnulib-local/lib/libxml/save.h (xmlEncodeAttributeEntities): Declare also when LIBXML_OUTPUT_ENABLED is 0.