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/itstool/itstool.toml

@@ -0,0 +1,33 @@
+[build]
+type = "autotools"
+
+[dependencies]
+runtime = [
+    "docbook-xml",
+    "libxml215",
+    "python",
+]
+
+[[manual_sources]]
+files = [
+    "0001-Fix-the-crash-from-912099.patch",
+    "0002-Fix-insufficiently-quoted-regular-expressions.patch",
+    "0003-Fix-handling-of-untranslated-nodes.patch",
+]
+
+[package]
+description = "Translate XML with PO files using W3C Internationalization Tag Set rules"
+homepage = "https://itstool.org/"
+license = "GPL-3.0-only"
+name = "itstool"
+version = "2.0.7"
+
+[[source]]
+extract_dir = "$name-$version"
+patches = [
+    "0001-Fix-the-crash-from-912099.patch",
+    "0002-Fix-insufficiently-quoted-regular-expressions.patch",
+    "0003-Fix-handling-of-untranslated-nodes.patch",
+]
+post_extract = ["autoreconf -fiv"]
+url = "https://github.com/itstool/itstool.git#$version"