Interlaced jpegs; jump scrolling

I recently updated to gqview 1.4.1 from pre-1.4 series. In contrast to
the earlier versions, interlaced jpegs are now displayed such that
first the coarser version is rendered on the screen, and then the
detailed version. This appears to be much slower - at least on this 1.4
GHz Celeron - than the former behaviour of not rendering the coarse
version.

I'd very much like it if the former behaviour could be restored, since
th new behavior slows down picture browsing considerably.

Another thing the older versions did better was file list scrolling. If
I remember correctly, it did jump scrolling: when the cursor reached
the end of the visible part of the list, the list was scrolled by half
a screen or so. That was better than the current behaviour of scrolling
only one line at a time, because it allowed seeing forward in the file
list while browsing through it one picture at a time. For my needs,
this is very important, as pictures are often in smallish groups when
sorted alphabetically, and I usually only want to see one or two
pictures of each group.

-- 
  Samuli Kärkkäinen                   |\      _,,,---,,_
 [email protected] ---------ZZZzz /,`.-'`'    -.  ;-;;,_------
http://www.woods.iki.fi              |,4-  ) )-,_. ,\ (  `'-'
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