Fixes for gemini installer: install version of pip for MacOX with easy_install, ensure using called python for virtualenv
Fixes for gemini installer: install version of pip for MacOX with easy_install, ensure using called python for virtualenv

bgruening/gemini,xuzetan/gemini,arq5x/gemini,bpow/gemini,heuermh/gemini,bw2/gemini,bgruening/gemini,xuzetan/gemini,heuermh/gemini,bpow/gemini,bw2/gemini,brentp/gemini,arq5x/gemini,arq5x/gemini,bpow/gemini,xuzetan/gemini,brentp/gemini,xuzetan/gemini,bpow/gemini,brentp/gemini,bw2/gemini,bw2/gemini,udp3f/gemini,arq5x/gemini,udp3f/gemini,heuermh/gemini,bgruening/gemini,bgruening/gemini,brentp/gemini,heuermh/gemini,udp3f/gemini,udp3f/gemini