Completed Negative Magic tool as a plugin (except sound).

Created Mirror and Flip Magic tools as plugins (except sound); hooks
added to Magic plugin API to allow starter and starter-undo mirror/flip.
Created Fade and Darken Magic tools as plugins.
Moved magic tool sounds to 'magic'.
Added flip and mirror icons to main Tux Paint UI (used to share magic tools')
Created 'tp-magic-config.sh' to get CFLAGS for compiling magic tool plugins.
Improved magic tool plugin API.
Committed some documentation on magic tool plugin API.

src/tp-magic-config.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# tp-magic-config
+
+# "Tux Paint Magic Config"
+# Tool that reports compiler options used when buidling Magic Tool
+# shared objects for Tux Paint
+
+# (c) Copyright 2007, by Bill Kendrick
+# bill@newbreedsoftware.com
+# http://www.tuxpaint.org/
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+# (See COPYING.txt)
+
+# Note: "__VERSION__" and "__INCLUDE__" are replaced by values
+# in Tux Paint's Makefile, via 'sed', by the 'make install-magic-plugin-dev'
+# target.
+
+# July 5, 2007 - July 5, 2007
+
+
+if [ $# -ne 0 ]; then
+  if [ $1 = "--version" ]; then
+    echo "__VERSION__"
+    exit
+  fi
+  if [ $1 = "--cflags" ]; then
+    echo `sdl-config --cflags` -I__INCLUDE__
+    exit
+  fi
+  if [ $1 = "--libs" ]; then
+    echo `sdl-config --libs`
+    exit
+  fi
+fi
+
+echo "Usage: tp-magic-config [--version] [--cflags] [--libs]"
+