Ports: Update nethack's patches to use git patches

Ports/nethack/patches/0001-Don-t-use-fcntl-on-serenity.patch

@@ -0,0 +1,27 @@
+From 3a91827276d7f4797ba1f8a2f37356ce0985dc7a Mon Sep 17 00:00:00 2001
+From: Gunnar Beutner <gbeutner@serenityos.org>
+Date: Sun, 11 Apr 2021 23:15:42 +0200
+Subject: [PATCH 1/5] Don't use fcntl on serenity
+
+---
+ include/unixconf.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/include/unixconf.h b/include/unixconf.h
+index c126d68..cafe766 100644
+--- a/include/unixconf.h
++++ b/include/unixconf.h
+@@ -246,8 +246,10 @@
+  * Comment out the USE_FCNTL if for some reason you have a strange
+  * OS/filesystem combination for which fcntl(2) does not work. */
+ #ifdef POSIX_TYPES
++#ifndef __serenity__
+ #define USE_FCNTL
+ #endif
++#endif
+ 
+ /*
+  * The remainder of the file should not need to be changed.
+-- 
+2.36.1
+