Add test cases to ConfigTest.
Fixes the test cases using Config::getCurrentPhpDir().
Merge pull request #417 from shinnya/feature/add_test_cases_to_ConfigTest

Adds test cases to ConfigTest.
Fixed PATH and PATH_WITHOUT_PHPBREW was broken in ZSH. fixes #420

Signed-off-by: Rack Lin <racklin@gmail.com>
Merge pull request #422 from racklin/bugfix/420

Fixed PATH and PATH_WITHOUT_PHPBREW was broken in ZSH.
fix "PHP Warning:  stream_get_contents():" when proc_open not set into variable
fix return value to test when calling Utils::system method
Merge pull request #423 from Backelite/hotfix/apxs2patchtask

Hotfix/apxs2patchtask
Runs make clean before installing an extension.