Merge branch 'hotfix/1.25.8' into stable
add gems to cache
improved gem installation
remove unwanted gems from binary rubies global, fix #2484
opal does not support gems, fix #2453
1.25.9
Merge branch 'master' into hotfix/1.25.9
Merge branch 'hotfix/1.25.9' into stable
Merge branch 'hotfix/1.25.9'
Merge branch 'master' into features/gem-cache
reset gem_version before parsing gem_install parameters
check rvm_path/gem-cache before installing gems with gem_install
improved removing of unwanted gems ignoring failures, fix #2484
use the limited gem list only in gem pristine
1.25.10
Merge branch 'master' into hotfix/1.25.10
Merge branch 'hotfix/1.25.10'
Merge pull request #2481 from wayneeseguin/features/gem-cache

RVM offline installation: rvm trying to connect to rubygems.org  to get https://rubygems.org/specs.4.8.gz
change the default remove to also remove gems, use uninstall to remove just ruby