ufed-0.90 release

For the full release version the patch
ufed-0.90_backport_folder_fix_portageq_fix.patch
is needed to backport in the following fixes:

- Fix bug #478318 ; Determine PORTDIR using portageq
- Fix bug #467530 ; Handle make.conf as a folder

The backporting is neccessary, because there are commits
containing changes scheduled for the 0.91 release in
between the tagged commit and the above fixes.
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