Merge branch 'hotfix/1.25.27' into stable
allow basic patchlevel support in ruby directive of Gemfile, closes #2914
move lookup_patchsets to patches
fix tracing output in logging
fix RedHat _system_name fallback, fix #2917
allow forcing implode
allow fallback from git to scmgit-base for older systems, fix #2920
improve check for available packages in solaris, update #2920
make sure executable-hooks is installed before running regenerate_binstubs, fix #2808
simplify selecting master branch for non mri
add rubinius 1.3.3
fix installing gems for rubinius, update #2808
fix migrating ruby aliases, update #2808
jruby 1.7.13, thanks @enebo
move detecting tar options to the only place it matters, update #2918
speed up db read by removing extra grep, update #2918
improve db operations matching / in keys
fix instaslling older rubinius
terminate sed p in __rvm_db_get, fix #2924, fix #2921
rubinius 2.2.10