Merge branch 'hotfix/1.25.1' into stable
make sure run_gem_wrappers_regenerate is used also in rubinius, update #2434
fix gemset environment files, fix rubinius installation, update #2434
move rubygems versions to database, make ruby-head use rg-head
1.25.2
Merge branch 'master' into hotfix/1.25.2
Merge branch 'hotfix/1.25.2' into stable
Merge branch 'hotfix/1.25.2'
use gem-empty for rvm gemset empty
fix loading rvm in installer, fix #2444
fix early console output in installer
add missing autolibs require, update #2444
1.25.3
Merge branch 'master' into hotfix/1.25.3
Merge branch 'hotfix/1.25.3' into stable
Merge branch 'hotfix/1.25.3'
fix detecting scripts base in zsh, fix #2444, update #2434
do not change executable rights for binaries if already can execute, fix #2445
improve message for __rvm_remove_ruby
improved ruby installation