Add a "Expand all levels"/"Print as displayed" pair of radio buttons to

Add a "Expand all levels"/"Print as displayed" pair of radio buttons to
the "File/Print" dialog box; "Expand all levels" means that all levels
of the protocol tree should be printed, while "Print as displayed" means
that only those levels shown in the display should be printed.

Free the table of column widths once printing is done.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@671 f5534014-38df-0310-8fa8-9805f1628bb7