Move all core files into src/core.

Move Browser & Node specs to test against lib/jasmine.js instead of the separate source. Yes, this makes development a little harder but it's better to test that jasmine.js was built correctly.

src/core/MultiReporter.js

@@ -0,0 +1,35 @@
+/**
+ * @constructor
+ */
+jasmine.MultiReporter = function() {
+  this.subReporters_ = [];
+};
+jasmine.util.inherit(jasmine.MultiReporter, jasmine.Reporter);
+
+jasmine.MultiReporter.prototype.addReporter = function(reporter) {
+  this.subReporters_.push(reporter);
+};
+
+(function() {
+  var functionNames = [
+    "reportRunnerStarting",
+    "reportRunnerResults",
+    "reportSuiteResults",
+    "reportSpecStarting",
+    "reportSpecResults",
+    "log"
+  ];
+  for (var i = 0; i < functionNames.length; i++) {
+    var functionName = functionNames[i];
+    jasmine.MultiReporter.prototype[functionName] = (function(functionName) {
+      return function() {
+        for (var j = 0; j < this.subReporters_.length; j++) {
+          var subReporter = this.subReporters_[j];
+          if (subReporter[functionName]) {
+            subReporter[functionName].apply(subReporter, arguments);
+          }
+        }
+      };
+    })(functionName);
+  }
+})();