fix bug #1615: installer must create extension dir if it doesn't exist, patch by Tomas
fix bug #1615: installer must create extension dir if it doesn't exist, patch by Tomas


marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core,marcosptf/pear-core