TOYAMA Shin-ichi noticed that when building for Win32 under mingw/msys,
an #include of "librsvg-cairo.h" was also necessary.
He also bumped the version # in win32/resources.rc
(and I put his credit in there).
I updated docs/RELEASE.txt to mention that .rc file also needing
updated when preparing a new release.
Wrapped some debug output in "#ifdef DEBUG" tests,
and made sure some warnings and errors were going to
STDERR, rather than STDOUT.
Motivation: Less noise while launching/using Tux Paint,
unless it matters.
Manpage still showed that "--fullscreen" (with no value) could be
specified. Lately, it requires =yes, =no, or =native.
For https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769368
Also, remove a duplicated credit from the contributor list.
Ability to disable stereo panning effect (e.g., paint brush, UI
elements sound effect feedback, etc.), useful for users with
hearing impairment in one ear, or situations where one speaker or
headphone is being used. Use "--nostereo" command-line option
or "nostereo=yes" config. file option.
"Fill", as a new main-toolbar tool, was not recording snapshots
of the image for the "Undo" tool. Mended.
However, also updated the tool so that it doesn't _bother_ recording
into the undo buffer if the fill action is a no-op (e.g., clicking
the same spot a second time, or otherwise attempting to fill an
area with a color that's identical to what's already on the canvas).
I cannot recall[*] why we disabled the steps to generate thumbnails of
starters (".thumbs/STARTERNAME-t.png") and install them in the system
directory (e.g., /usr/local/share/tuxpaint/starters/.thumbs/),
but every time one goes to create a new image ("New"), it took a very
long time to show.
[*] If anyone remembers ~a decade ago, and has a good reason, let me know!
Also, remove "Makefile" as a prerequisite for some targets; if anything
major changes in there, it's expected one will run "make clean" or
remove the binary/etc. target and rebuild. (Rebuilding "tuxpaint.o"
every time I edited something unrelated in Makefile was really annoying :) )
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.
