Ports: Update the CMake platform module from upstream

While we're at it, remove the `/bin/sh` patch that is no longer needed,
as we now build the port fully on the host.

Ports/cmake/patches/0005-cmcurl-Use-struct-stat-and-include-sys-stat.h.patch

@@ -1,27 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ali Mohammad Pur <ali.mpfard@gmail.com>
-Date: Wed, 12 Jan 2022 22:18:23 +0330
-Subject: [PATCH] cmcurl: Use struct stat and include sys/stat.h
-
-For unknown reasons, curl_setup_once.h does not include sys/stat.h. This patch includes sys/stat.h.
-
-- [ ] Local?
-- [ ] Should be merged to upstream?
-- [X] Resolves issue(s) with our side of things
-- [X] Hack
----
- Utilities/cmcurl/lib/curl_setup.h | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/Utilities/cmcurl/lib/curl_setup.h b/Utilities/cmcurl/lib/curl_setup.h
-index 7421b670..b06c19d8 100644
---- a/Utilities/cmcurl/lib/curl_setup.h
-+++ b/Utilities/cmcurl/lib/curl_setup.h
-@@ -403,6 +403,7 @@
- #endif
- 
- #ifndef struct_stat
-+#  include <sys/stat.h>
- #  define struct_stat struct stat
- #endif
-