Replace the somewhat-recently-added "nothing" item in the tool bar
with the "Fill" tool, which has been converted back from a Magic tool
to a regular tool.
Also, change bash "==" to sh "=" in "if [ ... ]" tests in Makefile.
Also, link to math library (via "-lm") to make sure "max()" is available to
magic tools.
Also, add missing mention of "--newcolorslast" and "--newcolorsfirst" to manpage.
Rereated full-window screenshots (showing canvas vs tools vs
colors vs selector vs open dialog) using 0.9.23; the earlier images
were from forever ago.
Using the SVG-based "Tux Paint" title text at the top of HTML docs
(replacing ancient, totally-mouse-drawn one from 2002).
Also, while I was in there, added big "out of date" notices,
with links to English documentation, in outdated translated ones.
