`py-smart-operator-mode-p', docu fixed
Python3.3 pep397 launcher fails, lp:1112207

Provide customizable versioned py-python-commands --
py-[I]python[23]-command --, taking the whole path if needed
Customizable versioned py-python-commands, again
menu "Python/Customize"Switches/Execute", `py-fast-process-p' added
list command customizations alongside with the command-args
Menu "Fast process " redundancy
With PATH/TO/EXECUTABLE default, use short py-buffer-name

When PATH/TO/EXECUTABLE is the default one, only use short form in
py-buffer-name: Python3, Python etc.
Internal changes

Hand over shell as symbol, not string
Send py-python3-command instead of "python3"
for example. Symbol may hold PATH/TO/EXECUTABLE
C-u prompt for PATH/TO/EXECUTABLE, lp:1319647

With PATH/TO/EXECUTABLE, buffers are named:

C-u python RET ==> "*PTE Python*"

commonly

M-x py-shell RET ==> "*Python*"
M-x python RET ==> "*Python*"
M-x ipython RET ==> "*IPython*"
M-x python3 RET ==> "*Python3*"