add json check before compile (#354)

* add json check before compile

* do more checking on effects

* add effects checking

* better effects checking.

* integrate schema check for default config
reduce size of default configs

test/jsonchecks/checkjson.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+import json, sys
+
+print("-- validate json files")
+
+retval  = 0 
+total   = 0
+errors  = 0
+for filename in sys.argv[1:]:
+	with open(filename) as f:
+		total += 1
+		msg = "   check json %s ... " % filename
+		try:
+			json.load(f)
+			#print(msg + "ok")
+		except ValueError as e:
+			print(msg + 'invalid')
+			retval = 1
+			errors += 1
+
+print("   checked files: %s success: %s errors: %s" % (total,(total-errors),errors))
+
+sys.exit(retval)