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/docbook-sgml/docbook-sgml.toml

@@ -0,0 +1,24 @@
+[build]
+type = "custom"
+
+[dependencies]
+runtime = ["sgml-common"]
+
+[package]
+description = "Document type definitions for verification of SGML data files against the DocBook rule set."
+homepage = "https://www.docbook.org/sgml/"
+license = "LicenseRef-docbook-sgml"
+name = "docbook-sgml"
+version = "4.5"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "8043e514e80c6c19cb146b5d37937d1305bf3abf9b0097c36df7f70f611cdf43"
+url = "https://archive.docbook.org/sgml/$version/docbook-$version.zip"
+
+[[manual_sources]]
+files = [
+  "postinstall.sh",
+  "postupdate.sh",
+  "preremove.sh",
+]