Algorithm of computation of safe shift value along 2D-line (in order to distance between two points was less than tolerance) has been improved.
Correction of some test cases in accordance with their new behavior.
Test-case for issue #26642
Small correction of test-case
Small correction of test-case bugs heal bug26642
Added subgroups volumemaker, gdml_private and gdml_public
Moved scripts from public repository ti test cases
Added more TODOs to unstable test cases
Small corrections for unstable test cases
