Fix the build.

StarMath needs oox/export/ooxmlexport.hxx. This fixes
f8d22519 by exporting the
moved file from oox and adapting starmath.

oox/Package_inc.mk

@@ -41,6 +41,7 @@ $(eval $(call gb_Package_add_file,oox_inc,inc/oox/export/drawingml.hxx,oox/expor
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/export/shapes.hxx,oox/export/shapes.hxx))
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/export/utils.hxx,oox/export/utils.hxx))
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/export/vmlexport.hxx,oox/export/vmlexport.hxx))
+$(eval $(call gb_Package_add_file,oox_inc,inc/oox/export/ooxmlexport.hxx,oox/export/ooxmlexport.hxx))
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/helper/binarystreambase.hxx,oox/helper/binarystreambase.hxx))
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/helper/containerhelper.hxx,oox/helper/containerhelper.hxx))
 $(eval $(call gb_Package_add_file,oox_inc,inc/oox/helper/graphichelper.hxx,oox/helper/graphichelper.hxx))

starmath/inc/unomodel.hxx

@@ -37,7 +37,7 @@
 #include <sfx2/sfxbasemodel.hxx>
 #include <comphelper/propertysethelper.hxx>
 #include <vcl/print.hxx>
-#include <filter/msfilter/ooxmlexport.hxx>
+#include <oox/export/ooxmlexport.hxx>
 
 class SmFormat;