Add various packages and patches for build system improvements

- Introduced valgrind with a patch to respect flags and updated its configuration.
- Added Vulkan ICD loader with CMake build configuration.
- Implemented Waf build system with a custom build script and configuration.
- Included Wayland protocols with Meson build system.
- Added xcb-util-keysyms with autotools configuration.
- Introduced Yasm with multiple patches for compatibility and improvements.
- Added Yelp tools and XSL with Meson build configurations and necessary patches for POSIX compliance.

extra/glib2/0001-glib-compile-schemas-Remove-noisy-deprecation-warnin.patch

@@ -0,0 +1,40 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
+Date: Fri, 7 Jan 2022 18:59:10 +0000
+Subject: [PATCH] glib-compile-schemas: Remove noisy deprecation warnings
+
+While the warnings are useful for developers, Arch Linux users also see
+them when glib-compile-schemas gets run after upgrades, where they just
+add noise.
+
+The alternative to this patch would be redirecting the compiler's stderr
+to /dev/null, but that might also suppress more useful errors or
+warnings we want users to see.
+---
+ gio/glib-compile-schemas.c | 13 -------------
+ 1 file changed, 13 deletions(-)
+
+diff --git a/gio/glib-compile-schemas.c b/gio/glib-compile-schemas.c
+index 81e675f53e8b..1a10a8d098c5 100644
+--- a/gio/glib-compile-schemas.c
++++ b/gio/glib-compile-schemas.c
+@@ -1232,19 +1232,6 @@ parse_state_start_schema (ParseState  *state,
+       return;
+     }
+ 
+-  if (path && (g_str_has_prefix (path, "/apps/") ||
+-               g_str_has_prefix (path, "/desktop/") ||
+-               g_str_has_prefix (path, "/system/")))
+-    {
+-      gchar *message = NULL;
+-      message = g_strdup_printf (_("Warning: Schema “%s” has path “%s”.  "
+-                                   "Paths starting with "
+-                                   "“/apps/”, “/desktop/” or “/system/” are deprecated."),
+-                                 id, path);
+-      g_printerr ("%s\n", message);
+-      g_free (message);
+-    }
+-
+   state->schema_state = schema_state_new (path, gettext_domain,
+                                           extends, extends_name, list_of);
+