Great update of macro GSD_PointSplineLoftFrom Excel.xls

Hello I work actually on a new development of the famous macro GSD_PointSplineLoftFrom Excel.xls

I hope some peoples can collaborate on this great update.

1- transfert the macro to CATVba file
2- Open Excel file with a dialog box
3- Rebuild the achitecture of geometrical sets as follow:
-Created_from_excel
-Loft_1
- Points_1
- Splines_1
-Loft_2
- Points_2
- Splines_2
4- add a progress bar for big files
5- Modification of reading the cells in excel sheet without add X and Y and Z but by read the lign as a table.I hope this will reduce the time by three.
For exemple a table with 15000 points run in 10 minutes (too much for users).