* scd/ccid-driver.c (ccid_open_usb_reader): Call
libusb_set_auto_detach_kernel_driver.
* scd/scdaemon.c (oCompatibilityFlags): New.
(opts): Add option "compatibility-flags".
(compatibility_flags): New.
(main): Parse flags.
* scd/scdaemon.h (opt): Add field compat_flags.
(COMPAT_CCID_NO_AUTO_DETACH): New.