[ 634250 ] SearchDialogBase.py fix for Tk 8.4.1

SearchDialogBase refers to the grid 'col' option
considered ambiguous with Python 2.2.2 and Tk 8.4.1.
The correct name is 'column'.

text is the search term.

Rev 1.2 doerwalter
(string methods)

Much has changed -- too much, in fact, to write down.
The big news is that there's a standard way to write IDLE extensions;
see extend.txt.  Some sample extensions have been provided, and
some existing code has been converted to extensions.  Probably the
biggest new user feature is a new search dialog with more options,
search and replace, and even search in files (grep).

This is exactly as downloaded from my laptop after returning
from the holidays -- it hasn't even been tested on Unix yet.