Merge branch 'hotfix/1.23.12'
improve gcc detection in osx_port, fix #2317
add patch for fedora no_ec2m ssl problem, fix #2320, update #2319
add rubies for fedora/19/x86_64, closes #2319
fix detecting rubies, update 3837f42628dbebcabd7991ccadde21d17f8a6f84
switch to newer maven
force creating maven link
add code to prevent broken xcode-select link, fix #2313
rename dir to __dir to improve zsh compatiblity, fix #2322
atempt to install CLT on OSX 10.9, fix #2318
remove zsh "no progress
"please wait" for zsh users
Merge pull request #2324 from secondplanet/master

Zsh - "Can not show progress"
remove unused function __rvm_dotted_run, update #2324
add hook to prepend home/bin to PATH, update #2323
add the openssl patches to centos and redhat, closes #2321
do not install extra gems in ruby-1.8.6, fix #2325
Cleaner execution of sed in the remote update script
Use sed a bit better when building hash lists from remote
Add 1.9.3-p447 binary ruby to OS X 10.6-10.9 and drop previous patch level.

Add 2.0.0 to OS X 10.9 binary rubies.