`py-shell-manage-windows-p' dropped again

If nil, it is the same as
and
`py-split-window-on-execute-p' nil
`py-switch-buffers-on-execute-p' nil

So when using "(or ...) no need for that new boolean

`py-split-window-on-execute-p' fixed
`py-shell-manage-windows-p' dropped again

If nil, it is the same as
and
`py-split-window-on-execute-p' nil
`py-switch-buffers-on-execute-p' nil

So when using "(or ...) no need for that new boolean

`py-split-window-on-execute-p' fixed

New file Problems.org reporting known bugs
`py-split-window-on-execute-p' renamed `py-split-window-on-execute'

as it not a boolean any more