Tags: wzab/vextproj

The VEXTPROJ modified so, that the initial state of the project

is written into the initial_state.tcl
That allows to track settings changed by the user in the interactive
work with project in GUI.

Correction of checking of the Vivado version.

New scripts copied to the demo directories.

Added checking of the Vivado version - improvement suggested by Marek…

… Gumiński