Clarify the warning about the relative dates of Setup.dist and Setup; Jeremy had seen the warning but not realized what he should do about it.  Add the hint "Usually, copying Setup.dist to Setup will work."
Clarify the warning about the relative dates of Setup.dist and Setup;
Jeremy had seen the warning but not realized what he should do about
it.  Add the hint "Usually, copying Setup.dist to Setup will work."

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator