* pipi.c: add "--blur" and "--dither" commandline options.
  * blur.c dither.c: remove these examples, pipi.c works a lot better:
     pipi src.png --blur 10 dest.png
     pipi src.png --dither dbs dest.png
    (and of course combinations are possible)

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2694 92316355-f0b4-4df1-b90c-862c8a59935f

to convert, display, mogrify, animate etc. It can already convert between
    image formats (eg. "pipi src.png -o dest.jpeg").

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2693 92316355-f0b4-4df1-b90c-862c8a59935f

routine. Note that it is not the "real" sharpen which should be built
    on top of a gaussian kernel.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2662 92316355-f0b4-4df1-b90c-862c8a59935f

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2652 92316355-f0b4-4df1-b90c-862c8a59935f

about twice as fast as the original code in research/2008-displacement.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2644 92316355-f0b4-4df1-b90c-862c8a59935f

8-bit per channel picture to float32 then back again does not change
    the image.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2621 92316355-f0b4-4df1-b90c-862c8a59935f

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2604 92316355-f0b4-4df1-b90c-862c8a59935f

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2262 92316355-f0b4-4df1-b90c-862c8a59935f

old, they will certainly require some cleanup, eg. pkg-config transitions.


git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2228 92316355-f0b4-4df1-b90c-862c8a59935f

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2227 92316355-f0b4-4df1-b90c-862c8a59935f