Implement TreeProcessor to solve some issues with running the suite

- execute beforeAll/afterAll once per suite instead of once per child
  when running focused specs/suites Fixes #773
- refuse to execute an order if it would cause a suite with a beforeAll
  or afterAll to be re-entered after leaving once
- report children of an xdescribe similarly to how they would be
  reported if they were themselves x'd out Fixes #774
- only process the tree once instead of figuring it out again at each
  level

[finishes #87545620]
Fixes #776

src/core/requireCore.js

@@ -43,6 +43,7 @@ var getJasmineRequireObj = (function (jasmineGlobal) {
     j$.StringMatching = jRequire.StringMatching(j$);
     j$.Suite = jRequire.Suite();
     j$.Timer = jRequire.Timer();
+    j$.TreeProcessor = jRequire.TreeProcessor();
     j$.version = jRequire.version();
 
     j$.matchers = jRequire.requireMatchers(jRequire, j$);