Creation the test case for current issue.
Added flag for single extrema computation. Now implemented only for parametric solver GenExtCC.
Default behavior of curve/curve solver in distmini command changed to "find one solution".
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl":
- WOK-generated header files from inc and sources from drv are moved to src
- CDL files removed
- All packages are converted to nocdlpack