FMSLogo Code

Update with the changes for 6.16.1.

Bump the micro version for a bugfix release. The new version is 6.16.1.

Fix some problems with the binaryzip target that prevented it from being built.

Update the Credits page to include everyone who is thanked in the FMSLogo release notes.

Add the maintainers of the Italian and German versions.

Fix bug #1799027; fix a GDI handle leak in lbitblock that resulted in very strange behavior followed by an access violation when playing tetrads.lgo.

This is important enough to warrent doing a minor release, so I've rolled the version back from 6.17.0 to 6.16.1.

Fix bug #1799027; fix a GDI handle leak in lbitblock that resulted in very strange behavior followed by an access violation when playing tetrads.lgo.

Fix typos in comments.

Make the "binaryzip" target easier to maintain when I add a new language.

Fix a bug where selecting "Italian" installed the Portuguese version.