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/libva.toml

@@ -0,0 +1,39 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+keep = [ "etc/libva.conf" ]
+CFLAGS += [ "-DENABLE_VA_MESSAGING" ]
+post_install = [ "mkdir -pv $DESTDIR/etc", "echo 'LIBVA_MESSAGING_LEVEL=1' > $DESTDIR/etc/libva.conf" ]
+
+[dependencies]
+build = [
+    "libglvnd",
+    "meson",
+    "mesa"
+]
+optional = [
+    "intel-media-driver",
+    "libva-intel-driver",
+    "libva-mesa-driver",
+]
+runtime = [
+    "libdrm",
+    "libgl",
+    "libx11",
+    "libxext",
+    "libxfixes",
+    "wayland",
+]
+
+[package]
+description = "Video Acceleration (VA) API for Linux"
+homepage = "https://01.org/linuxmedia/vaapi"
+license = "MIT"
+name = "libva"
+version = "2.23.0"
+
+[[source]]
+extract_dir = "$name-$version"
+url = "https://github.com/intel/libva.git#dbf83dc3b1ce6bad46e1628aaf2da5ef731157b8"