checkpatch/coding-style: deprecate 80-column warning

Coding style is all about readability and maintainability using commonly

available tools.

The limit on the length of lines is 80 columns and this is a strongly

preferred limit.

Statements longer than 80 columns will be broken into sensible chunks, unless

exceeding 80 columns significantly increases readability and does not hide

information. Descendants are always substantially shorter than the parent and

are placed substantially to the right. The same applies to function headers

with a long argument list. However, never break user-visible strings such as

printk messages, because that breaks the ability to grep for them.

The preferred limit on the length of a single line is 80 columns.

Statements longer than 80 columns should be broken into sensible chunks,

unless exceeding 80 columns significantly increases readability and does

not hide information.

Descendants are always substantially shorter than the parent and are

are placed substantially to the right.  A very commonly used style

is to align descendants to a function open parenthesis.

These same rules are applied to function headers with a long argument list.

However, never break user-visible strings such as printk messages because

that breaks the ability to grep for them.

3) Placing Braces and Spaces

my @ignore = ();

my $help = 0;

my $configuration_file = ".checkpatch.conf";

my $max_line_length = 80;

my $max_line_length = 100;

my $ignore_perl_version = 0;

my $minimum_perl_version = 5.10.0;

my $min_conf_desc_length = 4;

  --types TYPE(,TYPE2...)    show only these comma separated message types

  --ignore TYPE(,TYPE2...)   ignore various comma separated message types

  --show-types               show the specific message type in the output

  --max-line-length=n        set the maximum line length, if exceeded, warn

  --max-line-length=n        set the maximum line length, (default $max_line_length)

                             if exceeded, warn on patches

                             requires --strict for use with --file

  --min-conf-desc-length=n   set the min description length, if shorter, warn

  --tab-size=n               set the number of spaces for tab (default 8)

  --tab-size=n               set the number of spaces for tab (default $tabsize)

  --root=PATH                PATH to the kernel tree root

  --no-summary               suppress the per-file summary

  --mailback                 only produce a report in case of warnings/errors

			if ($msg_type ne "" &&

			    (show_type("LONG_LINE") || show_type($msg_type))) {

				WARN($msg_type,

				     "line over $max_line_length characters\n" . $herecurr);

				my $msg_level = \&WARN;

				$msg_level = \&CHK if ($file);

				&{$msg_level}($msg_type,

					      "line length of $length exceeds $max_line_length columns\n" . $herecurr);

			}

		}