Add --no-setuptools and --no-pip options.
Add --no-setuptools and --no-pip options.

In specialised circumstances (e.g., when testing new versions of distribute
or pip) it can be useful to create a virtualenv which does not include these
packages pre-installed. Add options to specify that when creating the
virtualenv.

kissthink/virtualenv,kissthink/virtualenv,ionelmc/virtualenv,blueyed/virtualenv,Lyleo/virtualenv,Seha16/virtualenv,francatore/virtualenv,RAS-ViVa/virtualenv,ionelmc/virtualenv,vvtam/virtualenv,techtonik/virtualenv,dstufft/virtualenv,Seha16/virtualenv,mykemunson/virtualenv,Lyleo/virtualenv,madprog/virtualenv,ionelmc/virtualenv,davidszotten/virtualenv,bigplus/virtualenv,davidszotten/virtualenv,jedie/virtualenv,haridsv/virtualenv,blueyed/virtualenv,mykemunson/virtualenv,Ivoz/virtualenv,jedie/virtualenv,Ivoz/virtualenv,techtonik/virtualenv,francatore/virtualenv,bigplus/virtualenv,vvtam/virtualenv,madprog/virtualenv,haridsv/virtualenv,dstufft/virtualenv,RAS-ViVa/virtualenv