Merge branch 'hotfix/1.23.16'
move homebrew to be default on osx, it works better on mavericks
set the default rvm_verify_downloads_flag to 1 - avoid constant problems with rubygems and new rubies
fix listing global gemsets, fix #2363
add missing paramters in __rvm_setup_compile_environment_system_OSX, fix #2361
replace links with modifying PATH - fixes homebrew problems on osx
add notes for 1.24
add fixing of direcotries in fix-permissions, fix #2364
fix repair archives
fix list of available help commands, fix #2365
add ruby-rvm-env, #2347
allow overriding default 30 minutes for download, fix #2366
remove unneeded link to rvm-shell in root dir
1.24.0
Merge branch 'release/1.24.0' into stable