No yaml package

[dilyn-corner]

https://github.com/glasnostlinux/glasnost/blob/af8851a033efa8829cc14f8c049429b8fc9ce354/system/dtc/depends#L1

Friendo you're a life saver but you don't have a yaml package ;)

Patch for a three second fix :)

--- /dev/null
+++ b/system/yaml/build
@@ -0,0 +1,7 @@
+#!/bin/sh -e
+
+./configure \
+    --prefix=/usr
+
+make
+make DESTDIR="$1" install
--- /dev/null
+++ b/system/yaml/checksums
@@ -0,0 +1 @@
+c642ae9b75fee120b2d96c712538bd2cf283228d2337df2cf2988e3c02678ef4
--- /dev/null
+++ b/system/yaml/sources
@@ -0,0 +1 @@
+https://pyyaml.org/download/libyaml/yaml-0.2.5.tar.gz
--- /dev/null
+++ b/system/yaml/version
@@ -0,0 +1 @@
+0.2.5 1

ETA: dtc also has pkgconf make as a dep, and the build file is actually broken (though I could be wrong; I haven't thought very hard about this. I just need to quickly build a static dtc for a project :v)