Source changes should include date of change

[Josphe Brigmo]

Having source code that doesn't show changes with dates is pretty 
useless for diagnostics. I realize that git has the changes but 
the source code should.

If some code is added or changed it is very simple to add the 
date of change in a comment.

// Date: Date1, Date2, Date3, ....

Anything below a was changed at those dates.



Why not also add a link to the git hub patch or bugzilla or 
whatever?