[bug-mailutils] man page indentation

[積丹尼 Dan Jacobson]

mail --help's indentation of the words "Common options" and "Global
debugging settings" looks much better than that of the man page which
slides them further to the right, etc.

precede message by a list of addresses

-u, --user=USER
operate on USER's mailbox

Common options

--config-file=FILE, --rcfile=FILE
load this configuration file

--config-help
show configuration file summary

--config-lint, --rcfile-lint
check configuration file syntax and exit

--config-verbose, --rcfile-verbose
verbosely log parsing of the configuration files

--no-site-config, --no-site-rcfile
do not load site configuration file

--no-user-config, --no-user-rcfile
do not load user configuration file

--set=PARAM=VALUE
set configuration parameter

--show-config-options
show compilation options

Global debugging settings

--debug-level=LEVEL
set Mailutils debugging level

--debug-line-info
show source info with debugging messages

-?, --help
give this help list

--usage
give a short usage message

-V, --version
print program version