adds bz2 extension support and a common list of PHP extensions
adds bz2 extension support and a common list of PHP extensions

Now the php bz2 module can be easily build and a specific shop
implementation does not need to provide the list of common PHP modules
anymore. It now works out-of-the-box

claranet/spryker-base,claranet/spryker-base,claranet/spryker-base