Problem:    An empty nl.po file does not work with an old msgfmt.
Solution:   Put a single # in the file. (Laurent Blume)

Add missing test files.

Problem:    When only using patches build fails on missing nl.po.
Solution:   Create an empty nl.po file.

Problem:    Not all message translation files are installed.
Solution:   Also install the converted files.

Problem:    Small mistakes in comments, proto and indent.
Solution:   Fix the mistakes.

Also update runtime files

Add missing test82 files.