Segmentedlist output, adjusted width of table cells.

Segmentedlist output, adjusted width of table cells.
Problem:: Content of table cells in segmentedlist output wraps
even when there's still plenty of room left for text on the
current line. Cause:: Behavior described is by design in tbl(1).
It effectively sets the maximum width of cells to 1/3 of the
current line length. Not sure why... Fix:: Added called to .ll
request that causes line length to temporarily be increased to
1.62 times the current line length before table output of each
segmentedlist, then restore it back to previous width after
output of the table markup. I suppose there are probably some
cases where that will produce some undesirable results. But for
now, it gives good output for all test cases I've tried.