* WIN32: Rewrite Inno setup installer
* WIN32: Add small bmp for usage in the Inno setup script
* WIN32: Fix spacing in Inno setup script
* WIN32: Re-add the documentation files to the Start Menu
* WIN32: Add scummvm icon to the Inno setup uninstaller
* WIN32: Remove now obsolete scummvm.iss.in file
* WIN32: Remove reference to Inno installer in update-version.pl
* WIN32: Add reference to Inno setup bmp file in ports.mk