update test_install.py for moved tests/ and examples/
update test_install.py for moved tests/ and examples/

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