fix matplotlib version for ubuntu 10.04
fix matplotlib version for ubuntu 10.04

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