Add support for NetBSD
Merge branch 'master' into netbsd
Remove space
Merge branch 'hotfix/1.22.6' into stable
Change requirements order
Write error on set checksum verification failure. Retirve major version number more reliably
Merge branch 'master' into netbsd
Remove custom_before/after as unnecessary (hurried adding them)
Small refactorings
Introduce _system_version_full for NetBSD
Merge pull request #2201 from Ch00k/netbsd

Initial support for NetBSD
1.22.7
Merge branch 'master' into hotfix/1.22.7
Merge branch 'hotfix/1.22.7'
add rubygems 2.1.1 md5
switch ruby 2.0.0 and head to rubygems 2.1+