.sav files not shown in pspp file dialogs?

[Friedrich Beckmann]

Hi Harry,

the bug that the file filtering did not work in the quartz build did not work
on MacOS is related to changes in glib where type identifiers are now
os specific and not X11 alike.

https://savannah.gnu.org/bugs/?52323

The reason that .sav files were not shown is due to file filtering based
on mime types. See:

http://git.savannah.gnu.org/cgit/pspp.git/tree/src/ui/gui/psppire-window.c#n643

Therefore there must be a relation between the mime type 
„application/x-spss-sav“ and
the .sav files. On MacOS I did this in the application bundle Info.plist file 
but I have no idea
how this relation is defined on Windows. But maybe everything already works on
Windows automagically...

Fritz