Merge branch 'hotfix/1.20.9' into stable
make sure proper version of autoconf is installed for ruby-head, fix #1908
add jruby-1.7.4
SECURITY: do not allow PATH separator in gemset names, thanks to @DavidEGrayson
1.20.10
Merge branch 'master' into hotfix/1.20.10
Merge branch 'hotfix/1.20.10' into stable
Merge branch 'hotfix/1.20.10'
use proper sed flags for osx, fix #1910
add extra warning when installing EPEL fails, do not install EPEL if libyaml is not needed, fix #1909
try to make fink installation work
add missing cd in fink installation
fix fink default paths and do not hide fink installation
fink requires sudo - install to /sw
add a warning for fink installation, make sure /sw is used for installation
improve fink support, closes #1911
fix detecting installed packages in fink and updating certificates
updating fink
revisited list of required packages on fink
automatic installation with fink