Fix exit when running from KUAL on FW >= 5.6.5

Properly refresh the screen with useful stuff, instead of leaving
us hanging with an unusable mix of framework and our own crap.

platform/kindle/koreader.sh

@@ -190,10 +190,12 @@ if [ "${STOP_FRAMEWORK}" == "no" -a "${INIT_TYPE}" == "upstart" ] ; then
 	if [ "$count" == "" -o "$count" == "0" ] ; then
 		# NOTE: We want to disable the status bar (at the very least). Unfortunately, the soft hide/unhide method doesn't work properly anymore since FW 5.6.5...
 		if [ "$(printf "%.3s" $(grep '^Kindle 5' /etc/prettyversion.txt 2>&1 | sed -n -r 's/^(Kindle)([[:blank:]]*)([[:digit:].]*)(.*?)$/\3/p' | tr -d '.'))" -ge "565" ] ; then
+			PILLOW_HARD_DISABLED="yes"
+			# NOTE: Dump the fb so we can restore something useful on exit...
+			cat /dev/fb0 > /var/tmp/koreader-fb.dump
 			# FIXME: So we resort to killing pillow completely on FW >= 5.6.5...
 			logmsg "Disabling pillow . . ."
 			lipc-set-prop com.lab126.pillow disableEnablePillow disable
-			PILLOW_HARD_DISABLED="yes"
 			# NOTE: And, oh, joy, on FW >= 5.7.2, this is not enough to prevent the clock from refreshing, so, take the bull by the horns, and SIGSTOP the WM while we run...
 			if [ "$(printf "%.3s" $(grep '^Kindle 5' /etc/prettyversion.txt 2>&1 | sed -n -r 's/^(Kindle)([[:blank:]]*)([[:digit:].]*)(.*?)$/\3/p' | tr -d '.'))" -ge "572" ] ; then
 				logmsg "Stopping awesome . . ."
@@ -292,7 +294,11 @@ if [ "${STOP_FRAMEWORK}" == "no" -a "${INIT_TYPE}" == "upstart" ] ; then
 	if [ "${PILLOW_HARD_DISABLED}" == "yes" ] ; then
 		logmsg "Enabling pillow . . ."
 		lipc-set-prop com.lab126.pillow disableEnablePillow enable
-		# NOTE: Try to leave the user with a slightly less FB content that our own last screen... We'll be missing the menu & status bar, but it's better than the alternative...
+		# NOTE: Try to leave the user with a slightly more useful FB content than our own last screen...
+		cat /var/tmp/koreader-fb.dump > /dev/fb0
+		rm -f /var/tmp/koreader-fb.dump
+		# NOTE: In case we ever need an extra full flash refresh...
+		#eips -s w=${SCREEN_X_RES},h=${SCREEN_Y_RES} -f
 		lipc-set-prop com.lab126.appmgrd start app://com.lab126.booklet.home
 	fi
 	if [ "${PILLOW_SOFT_DISABLED}" == "yes" ] ; then