Support Error.stack in globalErrors.

See https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror

spec/core/integration/EnvSpec.js

@@ -2046,6 +2046,7 @@ describe("Env integration", function() {
           passed: false,
           globalErrorType: 'load',
           message: 'Uncaught SyntaxError: Unexpected end of input',
+          stack: 'a stack',
           filename: 'borkenSpec.js',
           lineno: 42
         },
@@ -2053,6 +2054,7 @@ describe("Env integration", function() {
           passed: false,
           globalErrorType: 'load',
           message: 'Uncaught Error: ENOCHEESE',
+          stack: undefined,
           filename: undefined,
           lineno: undefined
         }
@@ -2062,7 +2064,7 @@ describe("Env integration", function() {
     });
 
     env.addReporter(reporter);
-    global.onerror('Uncaught SyntaxError: Unexpected end of input', 'borkenSpec.js', 42);
+    global.onerror('Uncaught SyntaxError: Unexpected end of input', 'borkenSpec.js', 42, undefined, {stack: 'a stack'});
     global.onerror('Uncaught Error: ENOCHEESE');
 
     env.execute();

src/core/Env.js

@@ -100,11 +100,12 @@ getJasmineRequireObj().Env = function(j$) {
 
     if (!options.suppressLoadErrors) {
       installGlobalErrors();
-      globalErrors.pushListener(function(message, filename, lineno) {
+      globalErrors.pushListener(function(message, filename, lineno, colNo, err) {
         topSuite.result.failedExpectations.push({
           passed: false,
           globalErrorType: 'load',
           message: message,
+          stack: err && err.stack,
           filename: filename,
           lineno: lineno
         });