Ports/klong: Update klong to version 20220315

Upgrade patch to git style, add ReadMe.md and remove from the list of
ports missing descriptions.

Ports/klong/patches/0001-Patch-Makefile.patch

@@ -0,0 +1,44 @@
+From 63f3b49119e29d905a66c64895625c702b4827d5 Mon Sep 17 00:00:00 2001
+From: EWouters <6179932+EWouters@users.noreply.github.com>
+Date: Tue, 5 Apr 2022 14:33:34 +0200
+Subject: [PATCH] Patch Makefile
+
+- Make `CC` configurable from `env`
+- Remove `klong.image` target from all
+- Add install target
+---
+ Makefile | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index f692ff7..470adcd 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,5 +1,5 @@
+ CFLAGS=	-g -Wall -pedantic -O3
+-CC=	cc $(CFLAGS)
++CC:=	$(CC) $(CFLAGS)
+ V=	20211014
+ R=	20220315
+ 
+@@ -12,7 +12,7 @@ OPTIONS= -DEDIT
+ # Modules to load into image file
+ MODULES=-l nstat -l nplot -l time
+ 
+-all:	kg klong.image
++all:	kg
+ 
+ klong.image:	kg
+ 	./kg -n $(MODULES) -o klong.image
+@@ -54,3 +54,8 @@ csums:
+ 
+ mksums:	clean
+ 	find . -type f | grep -v _csums | grep -v klong2015 | csum >_csums
++
++install:
++	install kg ${DESTDIR}/usr/local/bin
++	mkdir -p ${DESTDIR}/usr/local/lib/klong
++	install -m 644 lib/* ${DESTDIR}/usr/local/lib/klong
+-- 
+2.32.0 (Apple Git-132)
+