Fix typo:

requirements_smartos_lib_install -> requirements_smartos_libs_install

This is in line with the other scripts, and it was failing because
the function didn't exist
Merge pull request #1956 from mirell/smartos

Fix typo for SmartOS Requirements
changed rvm_architectures to array variable, add architectures compilation support on linux, update #1936
Merge branch 'master' of github.com:wayneeseguin/rvm