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/pixman/pixman.toml

@@ -0,0 +1,34 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+configure = [
+    "-Dloongson-mmi=disabled",
+    "-Dvmx=disabled",
+    "-Darm-simd=disabled",
+    "-Dneon=disabled",
+    "-Dmips-dspr2=disabled",
+    "-Drvv=disabled",
+    "-Dgtk=disabled",
+    "-Da64-neon=disabled",
+]
+
+[dependencies]
+build = [
+    "meson",
+    "libpng",
+]
+runtime = ["glibc"]
+
+[package]
+description = "The pixel-manipulation library for X and cairo"
+homepage = "https://gitlab.freedesktop.org/pixman/pixman"
+license = "MIT"
+name = "pixman"
+version = "0.46.4"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "a098c33924754ad43f981b740f6d576c70f9ed1006e12221b1845431ebce1239"
+url = "https://www.x.org/releases/individual/lib/pixman-$version.tar.xz"