Introduce select-mode and use pretty formating for the global lists.

Introduce select-mode and use pretty formating for the global lists.

This patch introduces the new --select-mode option which is used
to specify which of the four possible output formats should be used.
Only this table is being printed.

The other change to select.c is that the global list also uses the
functions from format.c to pretty-print the output. The new
--global-list-format option may be used to customize the output.