Changes between TableList-1.1 and TableList-1.3

- ported to Tk-4.0 (changes in scrolling, selection, etc...)

- discarded previous dynamic scrolling code due to
  incompatible changes in Tk-4.0. I now just insert
  updates in the code when filling large tables, using
  something like this (from a sybTcl based application):

	set n 0
	while {! [lempty [set row [SQLnext]]]} {
	    $table_ append_row $row
	    if {[incr n] % 26 == 0} {
		message "Found $n runs so far..."
		update 
		if {$seq_ > $seq} {
		    return
		}
	    }
	}
  This updates the display every 26 rows. The "seq" variables are used
  to handle re-entrance...
  Note that this is not part of the TableList widget, since it might 
  require special handling on the part of the application.

- There is now a "set_option" method that sets options for one column
  and a "set_options" that sets the options for a list of columns.
  (since column headings may contain blanks and look like lists)

- added TableListPrint dialog box with configurable options
  for printing selected columns.

- added "Precision" option for floating point columns.

- Other changes (I may have forgotton some...)


Changes between TableList-1.0 and TableList-1.1
-----------------------------------------------

- added suppport for 1 or 2 line table headings

- added option to turn off the dynamic scrolling features

- added support for dashed lines

- added "set_option" method, to set the Show, Align and Sep attributes for columns.
  (probably should be called columnconfig ...)

- BLT is now required (was optional), since I'm using the blt_table widget.
  (I know its a lot to require, but BLT and TclX are packages that
   should almost always be included, IMO...)

- fixed lots of minor bugs and added other minor features.

- also, not really related to the TableList widget:
  added/modified Check and Choice Itcl classes.
  These display a label and checkbuttons or radiobuttons using blt_table
  to arrange them in a table format. See the comments in the source, maybe
  I'll get time to document this...

