Cmake 3.0.2 & man pages

Closes #32102
Closes #32265
Am I misunderstanding you?

```
    resource("sphinx").stage do
      ENV.prepend_create_path "PYTHONPATH", buildpath+"sphinx"
      system "python", "setup.py", "install", "--prefix=#{buildpath}/sphinx"
    end
    ENV.prepend_path "PATH", "#{buildpath}/sphinx/bin"
```

```
==> python setup.py install --prefix=/private/tmp/cmake-M4ju1A/cmake-3.0.2/sphinx
running install
Checking .pth file support in /private/tmp/cmake-M4ju1A/cmake-3.0.2/sphinx/lib/python2.7/site-packages/
/usr/bin/python -E -c pass
TEST FAILED: /private/tmp/cmake-M4ju1A/cmake-3.0.2/sphinx/lib/python2.7/site-packages/ does NOT support .pth files
error: bad install directory or PYTHONPATH
```