packaging, issue #1647: Add docker groupname on the package release
Modify repository name regex to match index
Only copy files and change permissions with non bindmount
Fix attach issue
Improve detach unit tests
Merge pull request #1949 from dotcloud/1895-registry-regex

Modify repository name regex to match index
Merge pull request #1934 from dotcloud/host-permissions

Only copy files and change permissions with non bindmount
Merge pull request #1820 from dotcloud/1647-api-group

packaging, issue #1647: Add docker groupname on the package release
Merge pull request #1948 from dotcloud/fix_attach

Fix attach issue
Update tar dependency to newest version
Merge pull request #1967 from dotcloud/vendor-update-tar

Update tar dependency to newest version
Add several of the small make.sh fixes from #1920, and make the output more consistent and contributor-friendly, since release instructions already exist in release.sh