re-launching when setuptools is faked, and also detecting it's a fake egg to avoid re-patching twice
re-launching when setuptools is faked, and also detecting it's a fake egg to avoid re-patching twice

--HG--
branch : distribute
extra : rebase_source : 460953d0172aac7d61e6ffd784fa9ef47ec94d9e

pypa/setuptools,pypa/setuptools,pypa/setuptools