st_birthtim to useful value.
* fhandler_process.cc (fhandler_process::fstat): Ditto.
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Take
additional parameter for creation time. Fill st_birthtim with it.
Accomodate additional creation time parameter throughout.
* fhandler_raw.cc (fhandler_dev_raw::fstat): Set new stat member
st_birthtim to useful value.
* fhandler.cc (fhandler_base::fstat): Ditto.
* fhandler_registry.cc (fhandler_registry::fstat): Ditto.
* include/cygwin/version.h: Bump API minor number.
* include/cygwin/stat.h (struct __stat64): Replace st_spare4 with
timestruc_t st_birthtim.
(struct stat): Ditto if __CYGWIN_USE_BIG_TYPES__ is defined.
(st_birthtime): Define if __CYGWIN_USE_BIG_TYPES__ is defined.