a few things that will faze whatever we're using currently (2.0.19 or
thereabouts?), but nothing desperately modern. (NB, the 0.57 putty.iss works
fine with 5.0.8 and the installer is even 40k smaller.)
Notable changes:
- Uninstallation now runs a variant of `putty -cleanup'. The variance is
only in the text displayed; the user is still prompted, and the default
action is (now) "keep" in both cases.
- Optionally add an icon in the Quick Launch bar.
- Make desktop item optionally for all users. (not tested)
- "Create a Start Menu group" now handled via IS' own mechanism.
[originally from svn r5423]