Make -Q --help print param defaults and min/max values

Make -Q --help print param defaults and min/max values

Make -Q --help print the --param default, min, max values, similar
to how it does print the defaults for other flags. This is useful
to let a option auto tuner automatically query all needed information
abourt gcc params (previously it needed to access the .def file in
the source)

gcc/:

2014-09-29  Andi Kleen  <ak@linux.intel.com>

	* opts.c (print_filtered_help): Print --param min/max/default
	with -Q.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215704 138bc75d-0d04-0410-961f-82ee72b054a4