zip file created by ' (all files in zip)' now in fat format

[roger]

I have been running jenkins on CentOs 6 for a few years now. I upgraded (via yum) to version  jenkins-1.594-1.1.noarch and the zip files are now in 'fat' format rather than 'unx' format.

This drops all the file permissions, in particular the execute flags for the linux binaries.

Is there anyway to force Jenkins to create the 'unx' zip entries?

1.594 creates files like
$ zipinfo 146
Archive:  146
Zip file size: 21017878 bytes, number of entries: 43
-rw----     2.0 fat    11264 bl defN 14-Dec-09 18:10 archive/sw/art/packages/ate/mkenvimage
...

where it used to create

$ zipinfo 143
Archive:  143
Zip file size: 21020224 bytes, number of entries: 57
-rwxrwxr-x  2.0 unx    11264 bl defN 14-Dec-09 18:10 archive/sw/art/packages/ate/mkenvimage

any help would be appreciated as it makes the 'all files in zip' useless for me :-(