convert rubinius low memory error to a warning and move it further in the process, fix #2400
add missing jruby interpreter handling, fix #2401
avoid false detection of redhat systems by moving them to the end of detection, fix #2402
jruby-1.7.9, thank you @enebo
add ssl_no_ec2m for 1.9.2 on redhat/centos, update #2321
remove the brew link from rvm/bin, it is autodetected in autolibs, fix #2407
show last 15 lines of log on error, fix #2404
Merge branch 'master' into features/cygwin