Add scraper to find paths that fallback to software

tools/lua/paths_agg.lua

Index: tools/lua/paths_agg.lua
diff --git a/tools/lua/paths_agg.lua b/tools/lua/paths_agg.lua
new file mode 100644
index 0000000000000000000000000000000000000000..b996a114a286e25f0bbe6ddf528f56861c951426
--- /dev/null
+++ b/tools/lua/paths_agg.lua
@@ -0,0 +1,13 @@
+
+draws = 0;
+drawPaths = 0;
+swPaths = 0;
+
+dofile("/tmp/lua-output")
+
+io.write("Number of draws: ", draws, "\n");
+io.write("Number of paths: ", drawPaths, "\n");
+io.write("Number of concave, anti-aliased paths: ", swPaths, "\n");
+
+io.write("Percentage of paths needing software: ", (100* (swPaths / drawPaths)), "\n")
+io.write("Percentage of draws needing software: ", (100* (swPaths / draws)), "\n")