Fix broken tests

I've worked on Issue #657, when found that 2 tests in 3.7 doesn't work (checked on ubuntu 32bit, php 5.3.10 & 5.4.6):

	$ git branch
	* 3.7
	  master
	$ ./run_tests
	PHPUnit 3.7.10-4-ga0bccf3 by Sebastian Bergmann.

	Configuration read from /home/ilya/projects/pu/phpunit.orig/phpunit.xml

	[...progress cut...]

	Time: 8 seconds, Memory: 18.50Mb

	There were 2 failures:

	1) /home/ilya/projects/pu/phpunit.orig/Tests/TextUI/abstract-test-class.phpt
	--- Expected
	+++ Actual
	@@ @@
	-PHPUnit %s by Sebastian Bergmann.
	+PHPUnit 3.7.10-4-ga0bccf3 by Sebastian Bergmann.

	 F

	-Time: %i %s, Memory: %sMb
	+Time: 0 seconds, Memory: 3.50Mb

	@@ @@

	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/Assert.php:2744
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/Warning.php:103
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:824
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestResult.php:648
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:769
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:775
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:745
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/TestRunner.php:346
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:176
	+/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:129

	 FAILURES!
	 Tests: 1, Assertions: 0, Failures: 1.

	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Extensions/PhptTestCase.php:209
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:775
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:745
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/TestRunner.php:346
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:176
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:129

	2) /home/ilya/projects/pu/phpunit.orig/Tests/TextUI/fatal-isolation.phpt
	--- Expected
	+++ Actual
	@@ @@
	-PHPUnit %s by Sebastian Bergmann.
	+PHPUnit 3.7.10-4-ga0bccf3 by Sebastian Bergmann.

	 E

	-Time: %i %s, Memory: %sMb
	+Time: 0 seconds, Memory: 5.00Mb

	 There was 1 error:

	 1) FatalTest::testFatalError
	-PHPUnit_Framework_Exception: Fatal error: Call to undefined function non_existing_function() in %s
	+PHPUnit_Framework_Exception: PHP Fatal error:  Call to undefined function non_existing_function() in /home/ilya/projects/pu/phpunit.orig/Tests/_files/FatalTest.php on line 7
	+PHP Stack trace:
	+PHP   1. {main}() -:0
	+PHP   2. __phpunit_run_isolated_test() -:82
	+PHP   3. PHPUnit_Framework_TestCase->run() -:26
	+PHP   4. PHPUnit_Framework_TestResult->run() /home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:769
	+PHP   5. PHPUnit_Framework_TestCase->runBare() /home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestResult.php:648
	+PHP   6. PHPUnit_Framework_TestCase->runTest() /home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:824
	+PHP   7. ReflectionMethod->invokeArgs() /home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:969
	+PHP   8. FatalTest->testFatalError() /home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestCase.php:969

	-%s:%i
	-
	-Caused by
	-ErrorException: unserialize(): Error at offset %i of %i bytes
	-
	-%s:%i

	 FAILURES!
	 Tests: 1, Assertions: 0, Errors: 1.

	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Extensions/PhptTestCase.php:209
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:775
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:745
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/TestRunner.php:346
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:176
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:129

	There was 1 skipped test:

	1) /home/ilya/projects/pu/phpunit.orig/Tests/TextUI/log-json.phpt

	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Extensions/PhptTestCase.php:200
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:775
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/Framework/TestSuite.php:745
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/TestRunner.php:346
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:176
	/home/ilya/projects/pu/phpunit.orig/PHPUnit/TextUI/Command.php:129

	FAILURES!
	Tests: 938, Assertions: 1522, Failures: 2, Skipped: 1.

Please check my fix.