Fix a bug were only 2048 streams where usable even though more than
2048 streams were negotiated on the wire. While there, remove the
hard coded limit of 2048 streams.

MFC after: 3 days
o Make fields names short.
o Slim down reg fields comments.
stdlib.h: Add correct POSIX version for POSIX extensions to C.
Use f_show_msg() instead of f_dialog_msgbox() where appropriate. The main
difference between these two functions:

	Usage: f_show_msg() $format_string [ $format_args ... ]
	Usage: f_dialog_msgbox() $text [ $hline ]

The former lends itself well to displaying the $msg_* i18n text, prompts,
etc. While the latter is better for text you do not control (error strings
captured as a response from external commands) -- or if you have to control
the hline.
Do not inherit $SYSRC_VERBOSE from operating environment. The concern is
that when a user (such as myself) which has SYSRC_VERBOSE=1 in his/her
~/.bash_profile or such that when they are told to execute a command like:

	hostname `sysrc -n hostname`

NOTE: To activate a recently configured hostname.

If $SYSRC_VERBOSE is set, then POLA is violated because the output of sysrc
is indirectly influenced (making for an inconsistent experience).
Update sysrc(8) manual to coincide with r252797:

Do not inherit $SYSRC_VERBOSE from operating environment. The concern is
that when a user (such as myself) which has SYSRC_VERBOSE=1 in his/her
~/.bash_profile or such that when they are told to execute a command like:

	hostname `sysrc -n hostname`

NOTE: To activate a recently configured hostname.

If $SYSRC_VERBOSE is set, then POLA is violated because the output of sysrc
is indirectly influenced (making for an inconsistent experience).
Update copyright/date on the back of r252798.
Update release info.
Whitespace.
Fix a typo.
Update date on the back of r252802.
mdoc: begin sentences on a new line.
Don't refer to a port manual.
Since r251908, bsdconfig(8) has no direct ties to sade(8) (instead uses
`bsdinstall partedit'). Update references (s/sade/bsdinstall/) and change
the BUGS section to be based on reality.
Update e-mails.
Rest in peace Ron (Ron McDowell Jul.12, 1955 - Aug.26, 2012).
I'll carry-on from here. Thank you so much for your hard work.
Update HISTORY.
Add example shell script for creating a local INDEX file that can be
accessed quickly for browsing a list of available packages.
Change default FTP server (s/ftp-archive/ftp/).
Document new `-d' and `-D file' debugging options.