[upforgrabs] Integrate Igor Lesik's getoptEx?

[Jens Mueller]

Andrei Alexandrescu wrote:
> Upon contacting him, Igor was kind enough to share the source of his
> getoptEx module here:
> http://d.puremagic.com/issues/show_bug.cgi?id=3780
> 
> It's a simple improvement to getopt that adds a descriptive help
> string for the program, and for each option adds one or more help
> lines.
> 
> Could someone work his code into an addition to std.getopt? I'm
> thinking of keeping the same name and using overloading. Please
> reply to this if you plan to work on this.
> 
> 
> Thanks,

I have already done this. Some time ago. I can create a pull request for
his work.
But I didn't like it much (too limited). That's why I wanted to extend
it. But never found the time. getoptEx goes in the direction of
something like gflags but it's still far away from it.

Jens