Qt console alpha

Dear all,

I've uploaded the modifications required on
pqConsole<https://github.com/CapelliC/pqConsole>,
and added a swipl-win <https://github.com/CapelliC/swipl-win> project.

Albeit most functionality is in place, there are - of course - critical
points that will be refined soon. But the project should be ready to start
a preliminary usability test.

I've started blogging about, for instance explaining a
trick<http://prolog-in-the-wild.blogspot.it/2013/07/a-trick-for-qt-interthread-communication.html>I
found that make much simpler to call GUI functions from background.

About swipl-win, it's merely a Prolog script 'embedded' in executable, and
I've introduced the extension suggested by J.Morales. I hope this is not
annoying. As a SW developer this is the first time I have a chance to
introduce a potentially long standing, wide audience file extension. Thanks
Jose !

If someone like to use QtCreator, now the projects can be compiled/debugged
also on Windows / Qt 5. BTW 'porting' to Qt 5 highlighted a miss locking
that was unnoticed while developing in Ubuntu / Qt 4.8.

A detail: I've added tooltips, but helpidx.pl must be located before the
ballons pop over... I haven't it on my machine, then I had to download from
somewhere (I peeked one random...).


bye -- Carlo
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