+ update ReadMe and ChangeLog
Arch: disabled buggy wall auto-corners function
+ add further log messages at startup for better troubleshooting, fix possible crash, fix typos
+ workaround for issue with group separator
Add default for path to OpenSCAD on Mac OS X
Raise exception if the OpenSCAD executeable is unavailable
Adapt SMESH to new OCCT NCollection templates
remove TKAdvTools
backport salmone commit a62ca0b865089cbe32f5153341c02fbc6db88467

Move global methods needed for NCollection_DataMap< TopoDS_Shape, * >
to class SMESHDS_Hasher in order not to clash with the same global
definitions