Removes yum-config-manager from centos reqs, EPEL comes enabled
Merge branch 'hotfix/1.25.29'
Merge pull request #3003 from atrepca/centos-epel

Removes yum-config-manager from centos reqs, EPEL comes enabled
improved version check for patchless mri, update #3025
add support for systems that treat df -K as -h, fix #2958
Merge branch 'master' of github.com:wayneeseguin/rvm
make sure to use builtin test instead of command, fix #2994
add a verbose output for creatign wrappers, update #2987
expand ruby string printed in wrappers message, update #2987
default to rvm_environments_path when searching for default ruby during rvm setup, fix #2964
a recent commit was missing a closing curly brace causing the `source .rvm/scripts/rvm` command to fail (at least on OSX).
Merge pull request #3026 from abvdasker/string_interpolation_typo_fix

Typo fix
jruby-1.7.15
Merge branch 'master' of github.com:wayneeseguin/rvm
add support for user and system default ruby/gemset, update #2964
fix detecting head version of topaz, fix #3023
fix --user-install in installer, fix #2941
fix escaping of backslash for bash 4.3

`"${PATH//\//\/}"` -- returns PATH var with all slashes `/` replaced with escaped slashes `\/` but in bash 4.3 it doesn't work as itended. FIx should works both in 4.3 and 4.2
Merge pull request #3029 from budnik/patch-1

Fix escaping of backslash for bash 4.3
use more universal ucomm when checking command name via ps, update #2950