change return value of compute_bezier_extraction_1d() to 3D array
change return value of compute_bezier_extraction_1d() to 3D array

RexFuzzle/sfepy,lokik/sfepy,sfepy/sfepy,BubuLK/sfepy,sfepy/sfepy,lokik/sfepy,RexFuzzle/sfepy,vlukes/sfepy,vlukes/sfepy,RexFuzzle/sfepy,rc/sfepy,sfepy/sfepy,rc/sfepy,lokik/sfepy,RexFuzzle/sfepy,lokik/sfepy,BubuLK/sfepy,vlukes/sfepy,rc/sfepy,BubuLK/sfepy