Update install_dependencies.sh so that it installs PHPUnit 3.7.28.

tests/install_dependencies.sh

@@ -17,12 +17,12 @@ pear uninstall pear.symfony-project.com/YAML
 
 # install phpunit 3.4
 pear update-channels
-pear install pear.symfony-project.com/YAML-1.0.2
-pear install phpunit/PHPUnit_Selenium-1.0.1
-pear install phpunit/PHPUnit_MockObject-1.0.3
-pear install phpunit/PHP_Timer-1.0.0
-pear install phpunit/File_Iterator-1.2.3
-pear install phpunit/PHP_CodeCoverage-1.0.2
-pear install phpunit/Text_Template-1.0.0
-pear install phpunit/DbUnit-1.0.0
-pear install pear.phpunit.de/PHPUnit-3.4.15
+pear install pear.symfony-project.com/YAML-2.4.1
+pear install phpunit/PHPUnit_Selenium-1.3.3
+pear install phpunit/PHPUnit_MockObject-1.2.3
+pear install phpunit/PHP_Timer-1.0.5
+pear install phpunit/File_Iterator-1.3.4
+pear install phpunit/PHP_CodeCoverage-1.2.13
+pear install phpunit/Text_Template-1.1.4
+pear install phpunit/DbUnit-1.3.0
+pear install pear.phpunit.de/PHPUnit-3.7.28