Log Message:
* Update to the latest version - 0.6.15:

  * Build system rewritten (NOTICE: configure options was modified).
  * None privileged configuration added, as a result /etc/openct.conf
    ifdhandler was modified, please review sample at etc/openct.conf
    before upgrade.
  * The usb device add (/dev/bus/usb/$env{BUSNUM}/$env{DEVNUM}) udev rule is
    now available in separate file, as it should be available at most
    distributions, and may conflict. Install this only if you are using old
    udev that miss this statement.
  * Basic coldplug support on Linux is available without libusb dependency.
  * CCID-1.10 is now supported.

* Single PLIST file.
* Use CONF_FILES for configuration file.
* DESTDIR ready.
* More reasonable default options - pcsc-lite support is now default.