This patch fixes some cases in running binwalk:

 - from build dir: src/scripts/binwalk
 - from repo dir: src/build/binwalk
 - from custom dir, but without full path: ./binwalk
   (`dirname(dirname('./binwalk'))` becomes an empty string which is
   treated as "current working directory" while the expected output is
   "..")

While `unzip` has problems with extracting certain zip files[1], `7z`
does properly handle this test file. There is no reason to stick to
`jar` now.

Fixes #101.

 [1]: http://www.openipcam.com/files/Firmware/Foscam/FI8908W-fw11.14.1.46.zip

Added extractor.directory attribute which contains the absolute base extraction directory; fixed extraction path name cration bug.

Move 'archive data' string for Zip to ensure match on binwalk -y archive

Modify arj configuration to assume yes on all queries

Fix bug with unsigned values appearing as negative signed values

added Stuffit Support

Update header for TRX to include versioning and offsets

Make the color options not mutual exclusive

This commit allows to combine --red, --blue and --green options instead of the mutual exclusive behavior.
It is therefore possible to show, for example, only red and blue, that it to say every pieces of files that have changed.