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/waf/waf.toml

@@ -0,0 +1,17 @@
+[build]
+type = "custom"
+
+[dependencies]
+build = ["unzip"]
+runtime = ["python"]
+
+[package]
+description = "General-purpose build system modelled after Scons"
+homepage = "http://waf.io/"
+license = "BSD-3-Clause"
+name = "waf"
+version = "2.1.9"
+
+[[source]]
+extract_dir = "$name-$version"
+url = "https://gitlab.com/ita1024/waf.git#waf-$version"