[TxMt] running untitled python scripts

[Jacob Rus]

If you try to run an untitled Ruby file, the Ruby bundle saves a temp 
file, and then runs that.  In Python, we are first required to save the 
file somewhere.  I find myself saving lots of files in the trash or in 
/tmp.  What do people think of changing the Python run command to mimic 
the Ruby run command?  I would just change it myself, but perhaps 
someone has a reason to prefer the existing behavior.

-Jacob