These will become necessary shortly

library/include/df/custom/inorganic_raw.methods.inc

@@ -0,0 +1,4 @@
+bool isOre()
+{
+    return flags.is_set(df::inorganic_flags::METAL_ORE) || flags.is_set(df::inorganic_flags::THREAD_METAL);
+}

library/include/df/custom/material.methods.inc

@@ -0,0 +1,8 @@
+bool isGem()
+{
+    return flags.is_set(df::material_flags::IS_GEM);
+}
+bool isStone()
+{
+    return flags.is_set(df::material_flags::IS_STONE);
+}