Merge branch 'hotfix/1.22.15' into stable
Detect custom Maven setup on Debian-based systems
Merge pull request #2243 from gildegoma/allow-custom-maven-setup

Detect custom Maven setup on Debian-based systems
make sure certificates are up to date for binary ruby, fix #2244
clean/improve maven and ant requirements, update #2243
fix system name to actually be just one underscore
1.22.16
Merge branch 'master' into hotfix/1.22.16
Merge branch 'hotfix/1.22.16' into stable
Merge branch 'hotfix/1.22.16'
document managing ruby patchlevels with alias
State the expected ruby version and gemset
Update example
rubinius 2.0.0 released
1.22.17
Merge branch 'master' into hotfix/1.22.17
Merge branch 'hotfix/1.22.17' into stable
Merge branch 'hotfix/1.22.17'
update known rbx
Merge pull request #2246 from igas/fix-known-for-rbx

Update known rbx versions