Update CMakelists

Additional install targets for maps, and reworked dependencies

scripts/gen_maps.sh

@@ -0,0 +1,13 @@
+#! /bin/bash
+# Use to generate the ttrts maps
+
+ttrtsgen=$1
+
+test ! -e maps && mkdir maps # Make maps directory if needed
+if [ ! -e maps ]; then
+    exit 1
+fi
+
+cd maps
+
+$ttrtsgen

scripts/gen_usage.sh

@@ -0,0 +1,9 @@
+#! /bin/bash
+# Used to generate usage text from markdown
+cat README.md                        \
+    | sed 's/^#* //g'                \
+    | sed 's/\t/\\t/g'               \
+    | sed ':a;N;$!ba;s/\n/\\n\n/g'   \
+    | sed 's/^/\"/'                  \
+    | sed 's/$/\"/'                  \
+    > $1