(fhandler_base::set_did_lseek): Rename from set_check_win95_lseek_bug.
(fhandler_base::get_did_lseek): Rename from get_check_win95_lseek_bug.
(fhandler_base::set_fs_flags): New method.
(fhandler_base::get_fs_flags): Ditto.
* fhandler.cc (fhandler_base::write): Make 64 bit clean. Convert file
to a "sparse" file when writing after a long lseek (>64K) beyond EOF.
(fhandler_base::lseek): Call set_did_lseek() instead of
set_check_win95_lseek_bug().
(fhandler_base::fhandler_base): Initialize fs_flags to 0.
* fhandler_disk_file.cc (fhandler_disk_file::open): Don't create files
as "sparse" unconditionally. Set fs_flags member.
fac297d5f8