Run before,afterAlls as 'eachs' when specifying runnablesToRun

- Fix bug where beforeAlls were being mutated in Suite#execute
- When Env.execute() receives a list of runnables, beforeAlls and
  afterAlls are collected as beforeEachs and afterEachs. This allows
  runnables to be specified in any order, regardless of if any of them
  have before/afterAlls.
- Spec constructor takes a single function that returns both before and
  afters, instead of two functions. This breaks the current interface
  for constructing a Spec.

[#73742528]

src/core/Suite.js

@@ -75,7 +75,7 @@ getJasmineRequireObj().Suite = function() {
     var allFns = [];
 
     if (this.isExecutable()) {
-      allFns = this.beforeAllFns;
+      allFns = allFns.concat(this.beforeAllFns);
 
       for (var i = 0; i < this.children.length; i++) {
         allFns.push(wrapChildAsAsync(this.children[i]));