use extra code for ZSH log file name cutting, fix #1832
Merge pull request #1834 from rys/features/centos-epel-repo

Add EPEL yum repo support to CentOS 5 and 6
simplify and speed up color handling, closes #1828
Merge branch 'master' of github.com:wayneeseguin/rvm
fix ouptut coloring on OSX, update #1828
fix ZSH __rvm_unset, closes #1830
make sure rdoc is installed before generating gems, fix #1781
extra code to handle ZSH completion issues after unloading RVM, fix #1835
Use `\rm -f` instead of `rm` when removing zsh comp dump file to bypass any alias of rm in user's zsh configuration.
Merge pull request #1837 from JoeKun/master

Use `\rm -f` instead of `rm` when removing zsh comp dump file to bypass any alias of rm in user's zsh configuration.
unify autocompletion management, update #1838
Unify catchall and head ruby requirements on CentOS
Merge branch 'master' into features/centos-epel-repo