Added custom debug methods, kinda.

- Debug Build step now adds the method definition to a
  function-local-variable '__DEBUG_METHOD'.
- Added __DEBUG_METHOD to the .jshintrc.
- Added blocks.debug.throwMessage(Message: String, method: (e.g.
  __DEBUG_METHOD, level: [Notice, Warning, Error])
   Level currently only prints an other message and changes the color.
It's not perfect for example I don't like the __DEBUG_METHOD "global" in
the jshintrc but it's the best and cleanest way I could come up with for
now.
Other approches involved scary Estree-Magic and wold fail in case of
errors e.g. in user inserted function (callbacks).
For now it should be enough.

build/tasks/debug.js

@@ -62,7 +62,7 @@ module.exports = function (grunt) {
         if (func) {
           // FunctionExpression.BlockStatement.body(Array)
           var funcBody = func.body.body;
-          esprima.parse('blocks.debug && blocks.debug.checkArgs(' + toValueString(data) + ', Array.prototype.slice.call(arguments), {})').body.forEach(function (chunk) {
+          esprima.parse('blocks.debug && blocks.debug.checkArgs(__DEBUG_METHOD, Array.prototype.slice.call(arguments), {}); var __DEBUG_METHOD = ' + toValueString(data) + ';').body.forEach(function (chunk) {
             funcBody.unshift(chunk);
           });
         }

src/.jshintrc

@@ -27,6 +27,7 @@
 
   "globals": {
     "blocks": true,
-    "define": true
+    "define": true,
+    "__DEBUG_METHOD": true
   }
 }