Squashed commit of work to make Jasmine a collection of isolated modules. Note now that in our test suite, "jasmine" now always refers to the build jasmine loaded from jasmine.js and "j$" always refers to the code in the src directories.

Also, dev_boot.js is now a copy of boot.js and has additional changes to load jasmine the second time, into the j$ reference.

spec/core/ExceptionsSpec.js

@@ -2,7 +2,7 @@ describe('Exceptions:', function() {
   var env;
 
   beforeEach(function() {
-    env = new jasmine.Env();
+    env = new j$.Env();
     env.updateInterval = 0;
   });