Misc: Add two test scripts

Add two scripts for testing build.

tests/make-tests.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Test script for GNU make build
+
+BASE_DIR=$(dirname "$0")/..
+. "${BASE_DIR}/functions.sh"
+
+OPTIONS=( NO_XINERAMA NO_LIBCONFIG NO_REGEX_PCRE NO_REGEX_PCRE_JIT
+  NO_VSYNC_DRM NO_VSYNC_OPENGL NO_VSYNC_OPENGL_GLSL NO_VSYNC_OPENGL_FBO
+  NO_VSYNC_OPENGL_VBO NO_DBUS NO_XSYNC NO_C2 )
+
+for o in "${OPTIONS[@]}"; do
+  einfo Building with $o
+  make "${o}=1" -B "${@}" || die
+  einfo Build completed.
+done