Topic: Bug 5326 needs reversion for PHP < 5.5
The recent commit by @itronics addressing modules installation PHP function unpack() using "Z" instead of existing "a" prefix is valid only for PHP 5.5 and above as per the manual:
This commit will break all installs using any PHP < v5.5.
In fact, only an empty folder is created in the modules/_cache folder when an install is attempted.
Hence it is advised to make a check for PHP version before such a choice is made.
@joe, @Janusz - kindly do the needful.