Use .Lk for HTTP hyperlinks, not .Pa.

Most of the patch from Arto Jonsson <ajonsson at kapsi dot fi>.
jmc@ agrees in principle that .Lk is the right macro to use.

While here, update a few broken links,
and add missing markup at a few places.

4 files changed, 15 insertions, 14 deletions

diff --git a/usr.bin/less/less.1 b/usr.bin/less/less.1
index d85449b5051..51afb0909b1 100644
--- a/usr.bin/less/less.1
+++ b/usr.bin/less/less.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: less.1,v 1.27 2012/03/30 17:12:33 jmc Exp $
+.\"	$OpenBSD: less.1,v 1.28 2012/08/12 17:01:36 schwarze Exp $
 .\"
 .\" Copyright (C) 1984-2011  Mark Nudelman
 .\"
@@ -23,7 +23,7 @@
 .\" OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 .\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 30 2012 $
+.Dd $Mdocdate: August 12 2012 $
 .Dt LESS 1
 .Os
 .Sh NAME
@@ -883,7 +883,8 @@ If the environment variable
 is set, it is taken to be the name of a command compatible with
 .Xr global ,
 and that command is executed to find the tag.
-(See http://www.gnu.org/software/global/global.html).
+(See
+.Lk http://www.gnu.org/software/global/global.html ) .
 The -t option may also be specified from within
 .Nm
 (using the \- command) as a way of examining a new file.
@@ -1840,4 +1841,4 @@ Send bug reports or comments to the above address or to
 .Aq bug\-less@gnu.org .
 .Pp
 For more information, see the less homepage at
-.Pa http://www.greenwoodsoftware.com/less .
+.Lk http://www.greenwoodsoftware.com/less .
diff --git a/usr.bin/man/help.1 b/usr.bin/man/help.1
index 2ed3ce75a99..84916656149 100644
--- a/usr.bin/man/help.1
+++ b/usr.bin/man/help.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: help.1,v 1.10 2008/01/11 20:32:52 jmc Exp $
+.\"	$OpenBSD: help.1,v 1.11 2012/08/12 17:01:36 schwarze Exp $
 .\"
 .\" Copyright (c) 1999 Aaron Campbell
 .\" All rights reserved.
@@ -24,7 +24,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: January 11 2008 $
+.Dd $Mdocdate: August 12 2012 $
 .Dt HELP 1
 .Os
 .Sh NAME
@@ -53,14 +53,14 @@ option.
 Other
 .Ox
 references include the FAQ (Frequently Asked Questions) located at
-.Pa http://www.openbsd.org/faq ,
+.Lk http://www.openbsd.org/faq ,
 which is mostly intended for administrators and assumes the reader possesses
 a working knowledge of
 .Ux .
 There are also mailing lists in place where questions are fielded by
 .Ox
 developers and other users; see
-.Pa http://www.openbsd.org/mail.html .
+.Lk http://www.openbsd.org/mail.html .
 .Pp
 System administrators should have already read the
 .Xr afterboot 8
diff --git a/usr.bin/sendbug/sendbug.1 b/usr.bin/sendbug/sendbug.1
index 37280de8556..3806e760e8a 100644
--- a/usr.bin/sendbug/sendbug.1
+++ b/usr.bin/sendbug/sendbug.1
@@ -1,9 +1,9 @@
-.\" $OpenBSD: sendbug.1,v 1.20 2010/04/20 19:05:03 sthen Exp $
+.\" $OpenBSD: sendbug.1,v 1.21 2012/08/12 17:01:36 schwarze Exp $
 .\"
 .\" Written by Raymond Lai <ray@cyth.net>.
 .\" Public domain.
 .\"
-.Dd $Mdocdate: April 20 2010 $
+.Dd $Mdocdate: August 12 2012 $
 .Dt SENDBUG 1
 .Os
 .Sh NAME
@@ -55,7 +55,7 @@ should keep the same mail subject.
 .Pp
 The bugs database can be queried using the online bug tracking system
 available at
-.Pa http://www.openbsd.org/query-pr.html .
+.Lk http://www.openbsd.org/query-pr.html .
 This allows users to search for PRs based on either PR number
 or content.
 .Pp
diff --git a/usr.bin/whois/whois.1 b/usr.bin/whois/whois.1
index f7f92abd247..71583eef826 100644
--- a/usr.bin/whois/whois.1
+++ b/usr.bin/whois/whois.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: whois.1,v 1.28 2010/03/04 18:17:03 krw Exp $
+.\"	$OpenBSD: whois.1,v 1.29 2012/08/12 17:01:36 schwarze Exp $
 .\"	$NetBSD: whois.1,v 1.5 1995/08/31 21:51:32 jtc Exp $
 .\"
 .\" Copyright (c) 1985, 1990, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)whois.1	8.2 (Berkeley) 6/20/94
 .\"
-.Dd $Mdocdate: March 4 2010 $
+.Dd $Mdocdate: August 12 2012 $
 .Dt WHOIS 1
 .Os
 .Sh NAME
@@ -142,7 +142,7 @@ database
 .Pq Pa whois.internic.net
 is no longer handled by Network Solutions, Inc.
 For details, see
-.Pa http://www.internic.net/ .
+.Lk http://www.internic.net/ .
 .Pp
 (Hint: Contact information, identified by the term
 .Em handle ,