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/gsfonts/build.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+set -eu
+
+patch -Np1 -i ../3c0ba3b5687632dfc66526544a4e811fe0ec0cd9.patch
+
+install -vDm 644 fonts/*.otf -t "$DESTDIR/usr/share/fonts/gsfonts/"
+install -vDm 644 appstream/*.xml -t "$DESTDIR/usr/share/metainfo/"
+
+install -vdm 755 "$DESTDIR/usr/share/fontconfig/conf.default/"
+for _config in fontconfig/*.conf; do
+    _config_path="$DESTDIR/usr/share/fontconfig/conf.avail/69-${_config##*/}"
+    install -vDm 644 "$_config" "$_config_path"
+    ln -srf "$_config_path" "$DESTDIR/usr/share/fontconfig/conf.default/"
+done