[Idle-dev] Startup Shell Functionality

[Kurt B. Kaiser]

I added a new script, "idles", which causes a Python Shell to open instead of
the default editor window you get when you use "idle".  

<idle>            opens an empty editor window
<idle foo.py>     opens an editor window for foo.py
<idles>           opens a shell
<idles -e foo.py> opens a shell and an editor window for foo.py
<idles foo.py>    executes foo.py in shell before printing prompt

The last behaviour is questionable, per GvR. 

Should it exit, or edit foo.py?

It may be that a better name than "idles" can be found.  I chose that because
it was short.  Suggestions welcomed!

KBK