* python: tweak script linking in virtualenv
Instead of making the formula author use a slightly awkward block like
venv.link_scripts(bin) { venv.pip_install buildpath }
avoid exposing this implementation detail and offer the more familiar:
venv.pip_install buildpath, :link_scripts => bin
* Add non-block form and use instead of recursion
* Update 'pip_install' documentation
* Remove obsolete 'link_scripts'
* Add test for 'pip_install' with linking scripts
Also drop no longer relevant (and broken) `link_scripts` test, that
served as a template for the new test.
* Restore compatibility with Ruby 1.8.7
* Replace option hash with 'pip_install_and_link'
* Avoid confusing 'Object#tap' and fix silly bug
* Avoid side effects in mock object parameter check
* Simplify argument check (no need for a block)
