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/libva-intel-driver/libva-intel-driver.toml

@@ -0,0 +1,29 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+
+[dependencies]
+build = ["meson"]
+runtime = [
+    "libva",
+    "libdrm",
+]
+
+[package]
+description = "VA-API implementation for Intel G45 and HD Graphics family"
+homepage = "https://01.org/linuxmedia/vaapi"
+license = "MIT"
+name = "libva-intel-driver"
+version = "2.4.1"
+
+[[source]]
+extract_dir = "$name-$version"
+url = "https://github.com/intel/intel-vaapi-driver/releases/download/$version/intel-vaapi-driver-$version.tar.bz2"
+post_extract = [ '''sed -i '1s/python$/&2/' src/shaders/gpp.py''' ]
+sha256 = "b2:25888ac7a1a42233c4b0269bd910c5161f99bf22c932b46e20c8c77ed0404bf99702dd9f11b73bc0fd76a3b012ffa1de6c6133cbd7be880428235de9cfcc6ad8"
+patches = [ "4206d0e15363d188f30f2f3dbcc212fef206fc1d.patch" ]
+
+[[manual_sources]]
+file = "4206d0e15363d188f30f2f3dbcc212fef206fc1d.patch"