Ticket 47436 - 389-ds-base - shebang with /usr/bin/env
    
    Bug Description:  There might be an issue that the script is executed
                      with unwanted version of <lang> if that language is
                      provided by enabled software collection.
    
    Fix Description:  Added new configure option to set the perl directory.
                      This new option can be added to the spec file for
                      official RHEL/Fedora releases.
    
                      The main code change was in configure.ac
    
    https://fedorahosted.org/389/ticket/47436
    
    Reviewed by: rmeggins(Thanks!)