#640 widget-related features (aka bugs) found using atv

[giloo]

This is a list of not-so-important features found using the last version of the ATV procedure (3.0b4, http://www.physics.uci.edu/~barth/atv/atv.pro)
- resizing does not work (was ok with a previous version of atv -- ??)
- pixel table (menu entry ImageInfo-->pixelTable) is unreadable cause column size is too small
- GetImage works (retrieves NED or SIMBAD images) but
- Write PS fails ( POLY_FIT not found)

[giloo]

pixel table OK now.
Write PS did not fail on POLY_FIT (just get IDL's poly_fit).
It failed on HANDLE_CREATE from cmps_form.pro
HANDLE_CREATE is one of a series of old unsupported commands (replaced by pointers). HANDLE_*** have now been grossly mimicked by a few procedures in src/pro.
Now it fails on the current classic bug: confusion between wxWidgets and X11 devices.

[Sylwester Arabas]

moved to github: https://github.com/gnudatalanguage/gdl/issues/216