Merge branch 'hotfix/1.24.8' into stable
Merge branch 'release/1.25.0' into stable
fix rubinius installation after switching to gem-wrappers, fix #2434
fix removing broken links in bin, fix #2436
add an improved warning for older ruby binaries, closes #2438
fix installing older rubies
improved output messages for installation
simplify logging dots
updated tests for new ruby installation messages
cleanup wrappers leftovers, fix #2441
ensure wrappers are in place before creating links for them, fix #2440
use the fedora like patches on all affected ruby versions, fix #2439
fix ensuring environemnt file exist, fix #2442
1.25.1
Merge branch 'master' into hotfix/1.25.1
Merge branch 'hotfix/1.25.1' into stable
Merge branch 'hotfix/1.25.1'
Add MD5 for ruby-2.1.0-rc1.
Replace ruby-2.1.0-preview2 with ruby-2.1.0-rc1.
do not change rights if there is no need for that