[Bug 26505] New: file associations built by winemenubuilder lack wineprefix

http://bugs.winehq.org/show_bug.cgi?id=26505

Summary: file associations built by winemenubuilder lack
                    wineprefix
           Product: Wine
           Version: 1.3.16
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: programs
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Spotted by a user, http://forum.winehq.org/viewtopic.php?t=11558

If a user installs Word to a non-default wineprefix,
the file associations will still try to start .doc files
in the default wineprefix.

Normal menu items include wineprefix in the Exec= line
(introduced here
http://source.winehq.org/git/wine.git/commitdiff/f5b8bad2aafb14b7b47746edbe6...
)
but when file associations were later added in
http://source.winehq.org/git/wine.git/commitdiff/7287023647dcf76f8bae71e5945...
that was left out (by accident?).

Fix should be easy.