new test_ls_reuse() in tests/test_linear_solvers.py
new test_ls_reuse() in tests/test_linear_solvers.py

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