[git 17e68b85] make error in documentation

[Werner LEMBERG]

[git 17e68b85]

`make doc' fails with

  ...
  convert annotated-demo.svg out-www/annotated-demo.png
  convert: Must specify image size `/tmp/magick-XXqtAIPz'.
  convert: missing an image filename `out-www/annotated-demo.png'.
  make[3]: *** [out-www/annotated-demo.png] Error 1

This is `convert' from ImageMagick 6.4.3.

It seems that (a) either `convert' or the file has some problems (but
inkscape loads it without problems) and (b) that it has been forgotten
to add a PNG version of this file.

[Shouldn't the SVG->PNG Makefile rule be disabled, and perhaps moving
the SVG images to a separate directory?  Or do you `touch' the PNG
files in advance to avoid execution of the rule in case there are file
creation time issues during checking out a git repository?]


    Werner