Add a dir for contrib testing

contrib/build.lua

@@ -0,0 +1,31 @@
+#!/usr/bin/env texlua
+
+-- Build script for contrib packages
+
+-- Identify the bundle and module
+-- Just filler as this is purely a location for tests
+module = "contrib"
+bundle = ""
+
+-- Location of main directory: use Unix-style path separators
+maindir = ".."
+
+-- Non-standard settings
+checkdeps   =
+  {
+    maindir .. "/base",
+    maindir .. "/required/amsmath",
+    maindir .. "/required/graphics",
+    maindir .. "/required/tools"
+  }
+checksearch = true
+
+-- Load the common build code
+dofile(maindir .. "/build-config.lua")
+
+-- Find and run the build system
+kpse.set_program_name("kpsewhich")
+if not release_date then
+  dofile(kpse.lookup("l3build.lua"))
+end
+