update setup.py to install main scripts into sfepy/script/
update setup.py to install main scripts into sfepy/script/

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