Import v6.0.0
Import v6.1.0
Merge branch 'vendor'

Conflicts:
	ThirdParty/mrmpi/mpistubs/Makefile
	Utilities/vtktiff/tif_config.h.in
	Wrapping/Tcl/CMakeLists.txt
Locate scripts in our installation place (-tcltk/)
update .gitignore
Add generated file