Libc: Merge TARGET_OS_EMBEDDED patches

Both patches implement the same fix so they'll probably have to be
removed at the same time. This avoids one of them being left behind.

pkgs/os-specific/darwin/apple-source-releases/Libc/0001-Define-TARGET_OS_EMBEDDED-in-std-lib-io-if-not-defin.patch

···
+From 187d0e8847d080790b22724352e51de50d214dd8 Mon Sep 17 00:00:00 2001
+From: toonn <[e-mail]>
+Date: Tue, 27 Jul 2021 15:12:14 +0200
+Subject: [PATCH] Define TARGET_OS_EMBEDDED in std{lib,io} if not defined
+
+Originally attempted including `TargetConditionals.h` but this had
+knock-on effects, for example, breaking the zlib build because of
+`TARGET_OS_MAC` getting defined.
+
+This should be the lowest impact solution and corresponds to the default
+behavior IIUC.
+---
+ include/stdio.h  | 3 +++
+ include/stdlib.h | 3 +++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/include/stdio.h b/include/stdio.h
+index d0cf7a5..487496e 100644
+--- a/include/stdio.h
++++ b/include/stdio.h
+@@ -351,6 +351,9 @@ __END_DECLS
+ /* Additional functionality provided by:
+  * POSIX.2-1992 C Language Binding Option
+  */
++#ifndef TARGET_OS_EMBEDDED
++#  define TARGET_OS_EMBEDDED 0
++#endif
+ #if TARGET_OS_EMBEDDED
+ #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
+ #else
+diff --git a/include/stdlib.h b/include/stdlib.h
+index c04d3a7..0b454ba 100644
+--- a/include/stdlib.h
++++ b/include/stdlib.h
+@@ -183,6 +183,9 @@ unsigned long long
+ #ifndef LIBC_ALIAS_SYSTEM
+ //End-Libc
+ 
++#ifndef TARGET_OS_EMBEDDED
++#  define TARGET_OS_EMBEDDED 0
++#endif
+ #if TARGET_OS_EMBEDDED
+ #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
+ #else
+-- 
+2.17.2 (Apple Git-113)
+

pkgs/os-specific/darwin/apple-source-releases/Libc/0001-Define-TARGET_OS_EMBEDDED-in-stdlib-if-not-defined.patch

···
-From c0ab867bb7888401957539b0348902028a2be6e0 Mon Sep 17 00:00:00 2001
-From: toonn <[e-mail]>
-Date: Tue, 27 Jul 2021 15:12:14 +0200
-Subject: [PATCH] Define TARGET_OS_EMBEDDED in stdlib if not defined
-
-Originally attempted including `TargetConditionals.h` but this had
-knock-on effects, for example, breaking the zlib build because of
-`TARGET_OS_MAC` getting defined.
-
-This should be the lowest impact solution and corresponds to the default
-behavior IIUC.
----
- include/stdlib.h | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/include/stdlib.h b/include/stdlib.h
-index c04d3a7..0b454ba 100644
---- a/include/stdlib.h
-+++ b/include/stdlib.h
-@@ -183,6 +183,9 @@ unsigned long long
- #ifndef LIBC_ALIAS_SYSTEM
- //End-Libc
- 
-+#ifndef TARGET_OS_EMBEDDED
-+#  define TARGET_OS_EMBEDDED 0
-+#endif
- #if TARGET_OS_EMBEDDED
- #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
- #else
--- 
-2.17.2 (Apple Git-113)
-

pkgs/os-specific/darwin/apple-source-releases/Libc/0002-Define-TARGET_OS_EMBEDDED-in-stdio-if-not-defined.patch

···
-From 26a721ca68bb06cb815c49f4ac28bb9de8bb2cba Mon Sep 17 00:00:00 2001
-From: toonn <[e-mail]>
-Date: Tue, 27 Jul 2021 20:03:40 +0200
-Subject: [PATCH 2/2] Define TARGET_OS_EMBEDDED in stdio if not defined
-
----
- include/stdio.h | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/include/stdio.h b/include/stdio.h
-index d0cf7a5..487496e 100644
---- a/include/stdio.h
-+++ b/include/stdio.h
-@@ -351,6 +351,9 @@ __END_DECLS
- /* Additional functionality provided by:
-  * POSIX.2-1992 C Language Binding Option
-  */
-+#ifndef TARGET_OS_EMBEDDED
-+#  define TARGET_OS_EMBEDDED 0
-+#endif
- #if TARGET_OS_EMBEDDED
- #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
- #else
--- 
-2.17.2 (Apple Git-113)
-

pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix

···
   nativeBuildInputs = [ ed unifdef ];
 
   patches = [
-    ./0001-Define-TARGET_OS_EMBEDDED-in-stdlib-if-not-defined.patch
-    ./0002-Define-TARGET_OS_EMBEDDED-in-stdio-if-not-defined.patch
+    ./0001-Define-TARGET_OS_EMBEDDED-in-std-lib-io-if-not-defin.patch
   ];
 
   # TODO: asl.h actually comes from syslog project now