tktable added

--HG--
branch : aspn

tktable/README.blt

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+If tkTable is used at the same time as BLT then there are two name
+conflicts to be aware of.
+
+BLT also has a table.n man page.  TkTable's man page will still be
+available as tkTable.n.
+
+BLT also has a "table" command.  The table command of the last
+extension loaded will be in effect.  If you need to use both table
+commands then eval "rename table blttable" after loading blt and
+before loading tkTable, or perhaps "rename table tkTable" if you
+load the tkTable extension first.
+
+In general this shouldn't be a problem as long as you load tkTable
+last.  The BLT "table" command facilities have been subsumed by the
+Tk "grid" command (available in Tk4.1+), so the BLT table should
+only be used in legacy code.
+
+Alternatively, if you want both or have another "table" command,
+then change the TBL_COMMAND macro in the makefile before compiling,
+and it tkTable will define your named command for the table widget.