Added thumbnail to "erase this picture?" prompt.

Added "create_pot_file.sh" script for tuxpaint.pot regeneration.
Regenerated tuxpaint.pot.

src/po/create_pot_file.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# script to create a correct *.pot file
+#
+# the problem is that the i18n() functions can be of
+# one argument: i18n("translatable string")
+# or of two arguments: i18n("context", "translatable string")
+# this script rewrite the source files changing that second form
+# into i18n("_: context\ntranslatable string") that xgettext can grok
+# and produce the same kind of *.pot as expected by KDE 
+
+rm -f POTFILES.new
+(for i in `grep -v "encoding" POTFILES.in | sed 's:^:../:'`
+do
+ j="${i}_"
+ cat ${i} | \
+ sed 's|\(i18n[^(]*([^"]*"\)\([^"]*\)"[^")]*,[^")]*"|\1_: \2\\n|' > ${j}
+ echo ${j} | sed 's:^...::' >> POTFILES.new
+done )
+
+intltool-update --pot && mv -f tuxpaint.pot tuxpaint_tmp.pot
+/usr/bin/xgettext --from-code=UTF-8 -o tuxpaint_tmp_C.pot --directory=..  \
+ --add-comments --keyword=I_ --keyword=i18n \
+ --keyword=I18N_NOOP \
+ --language=C \
+ --files-from=./POTFILES.new
+msgcat --use-first tuxpaint_tmp.pot tuxpaint_tmp_C.pot > tuxpaint.pot
+
+( cd .. ; rm -f `cat po/POTFILES.new` )
+rm -f POTFILES.new tuxpaint_tmp*.pot 
+