Ports: Update gnuplot's patches to use git patches

Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/d6076bfce7
Pull-request: https://github.com/SerenityOS/serenity/pull/14055
Reviewed-by: https://github.com/danners
Reviewed-by: https://github.com/timschumi

Ports/gnuplot/patches/0001-Don-t-build-the-docs-and-the-demo.patch

@@ -1,5 +1,18 @@
---- gnuplot-5.2.8/Makefile.am.orig	2020-04-15 12:56:22.001000000 +0100
-+++ gnuplot-5.2.8/Makefile.am	2020-04-15 12:58:18.603091197 +0100
+From f05fc83941deb37eac3ac9caa95376d107215f79 Mon Sep 17 00:00:00 2001
+From: Linus Groh <mail@linusgroh.de>
+Date: Wed, 15 Apr 2020 14:23:25 +0100
+Subject: [PATCH] Don't build the docs and the demo
+
+- docs - segfault during make :/
+- demo - i686-pc-serenity-gcc: error: unrecognized command line option '-rdynamic'
+---
+ Makefile.am | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile.am b/Makefile.am
+index 9241ce5..1e2f6c6 100644
+--- a/Makefile.am
++++ b/Makefile.am
 @@ -1,7 +1,10 @@
  ## Process this file with automake to produce Makefile.in -*-Makefile-*-
  AUTOMAKE_OPTIONS = foreign
@@ -12,3 +25,6 @@
  
  EXTRA_DIST = BUGS Copyright FAQ.pdf GNUmakefile INSTALL INSTALL.gnu \
  Makefile.maint PATCHLEVEL PGPKEYS README RELEASE_NOTES \
+-- 
+2.36.1
+

Ports/gnuplot/patches/ReadMe.md

@@ -0,0 +1,9 @@
+# Patches for gnuplot on SerenityOS
+
+## `0001-Don-t-build-the-docs-and-the-demo.patch`
+
+Don't build the docs and the demo
+
+- docs - segfault during make :/
+- demo - i686-pc-serenity-gcc: error: unrecognized command line option '-rdynamic'
+