Merge branch 'hotfix/1.23.13'
improve calculating rvmrc warning target file, update #2328
add tests for #2328
do not check current Gemfile when checking allGemfiles, fix #2328
update tests for #2328
clean requirements summary, fix #2326
skip adding value to variable when prefix is already there, fix #2332
fix snapshot script: __rvm_tar is not a bash variable
Merge pull request #2334 from lamvak/bugfix/__rvm_tar

fix snapshot script: __rvm_tar is not a bash variable
separate CC from initially_selected_compiler, fix #2336
Merge branch 'master' of github.com:wayneeseguin/rvm
fix and add the ssl_no_ec2m.patch for ruby/1.8.7 for centos/fedora/redhat, fix #2343
improve sourcing rvm in zshrc file, update #2338
add name parsing and default CC for clang ruby, fix #2342
move system build configs to separate callbacks
cleaning and reformating build_config
cleaning build_config
extract scripts/functions/build_config_system
remove extra check from __rvm_setup_compile_environment_osx_compiler
1.23.14