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/WaitsBlock.js

@@ -0,0 +1,15 @@
+jasmine.WaitsBlock = function(env, timeout, spec) {
+  this.timeout = timeout;
+  jasmine.Block.call(this, env, null, spec);
+};
+
+jasmine.util.inherit(jasmine.WaitsBlock, jasmine.Block);
+
+jasmine.WaitsBlock.prototype.execute = function (onComplete) {
+  if (jasmine.VERBOSE) {
+    this.env.reporter.log('>> Jasmine waiting for ' + this.timeout + ' ms...');
+  }
+  this.env.setTimeout(function () {
+    onComplete();
+  }, this.timeout);
+};