move shaderlist.txt into the individual dirs again now that we can

data/scripts/shaderlist.txt

@@ -1,6 +0,0 @@
-common
-exosystem
-exx
-trak5x
-trak4x
-facility114x

misc/tools/update-shaderlists

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+for X in "$PWD"/data/*/scripts; do
+	cd "$X"
+	for X in *.shader; do
+		if [ -f "$X" ]; then
+			ls *.shader | sed 's/\.shader$//' > shaderlist.txt
+			git add shaderlist.txt
+			break
+		fi
+	done
+done