Merge pull request #534 from NQNStudios:fix-479

Fixing text buffer texture/font corruption (#479)

* #479 demonstrates that the contents of the text buffer are NOT irrelevant for reproducing bugs. So I set up recording/replay for the burma shave easter egg. This also makes an easy way to mess with the buffer state when debugging (just mash &/\*/&/\*/&/\* n times)
* When a replay throws an error, it puts up a showError() dialog. If the next action is a control_click, the system will try to click that control on the error dialog--which is totally divergent from the replay's intended behavior. So we should just stop replaying when an error happens.
* If you have a long replay and want to run it very fast, but then slow down when you get to the sequence that reproduces your bug, now you can add a `<change_fps>` to your replay to achieve that.
* Fixes for the 2 legacy replay errors that I opened recently

Fix #479 
Fix #532 
Fix #533

rsrc/dialogs/confirm-interrupt-replay.xml

@@ -0,0 +1,9 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='cancel'>
+	<pict type='dlog' num='23' top='9' left='9'/>
+	<text top='5' left='51' width='255' height='72'>
+		Are you sure you wish to stop this replay?</text>
+	<button name='quit' type='regular' top='86' left='178'>Stop</button>
+	<button name='cancel' type='regular' def-key='esc' top='86' left='248'>Cancel</button>
+</dialog>