Use HTTP URLs instead of FTP URLs in pkg-descr files

The use of FTP URLs in pkg-descr files has been deprecated and some of
the FTP URLs in those files have already become stale.

Replace FTP URLs with HTTP URLs where possible.

There does not appear to be any mirror that preserves the contents of
the defunct ftp.cac.washington.edu host.

Approved by:	portmgr (implicit)

dns/ares/pkg-descr

@@ -4,4 +4,4 @@ need to perform multiple DNS queries in parallel.  The primary
 examples of such applications are servers which communicate with
 multiple clients and programs with graphical user interfaces.
 
-WWW: ftp://athena-dist.mit.edu/pub/ATHENA/ares/
+WWW: https://github.com/mit-athena/libares/

games/qcc/pkg-descr

@@ -6,4 +6,4 @@ and QuakeWorld.
 Note that more feature-rich, optimizing QuakeC compilers are available in
 the Ports Collection.
 
-WWW: ftp://ftp.idsoftware.com/idstuff/source/
+WWW: http://ftp.iinet.net.au/pub/idstuff/source/

games/tetrinet-x/pkg-descr

@@ -12,4 +12,4 @@ Please note, this server in no way encompasses the whole game. The clients
 are the ones that do most of the work, with the server just passing suitable
 packets between each client, and of course adding some of it's own.
 
-WWW: ftp://ftp.dementia.nu/tetrinet/servers/tetrix
+WWW: https://servers.tetrinet.fr/

mail/xfaces/pkg-descr

@@ -1,4 +1,4 @@
 A program for monitoring mailspools (and other things) that can display
 shaped icons.
 
-WWW: ftp://ftp.cs.indiana.edu/pub/faces/index.html
+WWW: https://legacy.cs.indiana.edu/ftp/faces/index.html

net-mgmt/ng_ipacct/pkg-descr

@@ -15,4 +15,4 @@ Also, effective user ID of relevant process and timestamp can be saved.
 
 CPU overhead is minimal because ng_ipacct works at kernel level.
 
-WWW: ftp://ftp.wuppy.net.ru/pub/FreeBSD/local/kernel/ng_ipacct/
+WWW: https://github.com/vstakhov/ng_ipacct/

net/tcpview/pkg-descr

@@ -1,5 +1,3 @@
 Tcpview is Motif-based TCP/IP protocol analyzer.  It is a graphic version
 counterpart of tcpdump(1).  It allows users to analyze TCP/IP packets with
 comfortable graphic interface.
-
-WWW: ftp://ftp.cac.washington.edu/pub/noc-tools/tcpview/tcpview-1.0.tar.readme

x11/plasma5-layer-shell-qt/pkg-descr

@@ -4,4 +4,4 @@ shells work:
 
 https://drewdevault.com/2018/07/29/Wayland-shells.html
 
-WWW: kde.org
+WWW: https://kde.org/