Hm. Forgot about those. Nope. Leave them zipped. They're old fixes that are included now.
Will do, thanks!
Hmm, I started 1.5.1 and noticed that the main menu has a "check updates" button. When I press it, it tells me "Update 1.5.0 is available. Do you wish to install it?" As you might guess, I chose *not* to install it. 8-)