- Fix arch detection (don't convert amd64 to x86_64). 
- Discard version from installation paths. This is needed to unbreak
thunderbird-dictionaries with Thunderbird 3. 
- Bump PORTREVISION.
Feature safe: yes
Reported by: crsd on EFnet , Matthew Luckie <mjl AT luckie.org.nz> 
Obtained from: Patches from ale@ for seamonkey2