(<time.h>): Do not include; system.h now does this.

(<time.h>): Do not include; system.h now does this.
(make_directories): Skip filesystem prefixes.
Don't assume '/' is the only separator.
(extract_sparse_file): Use new full_write semantics.
On write error, return instead of invoking skip_file.
Do not free sparsearray; caller does this now.
(apply_nonancestor_delayed_set_stat): Do not assume '/' is the only
separator.
(extract_archive): Don't assume file name lengths fit in int.
Report what got stripped from member name; it might be more than '/'.
Use new full_write semantics.
Do not pass redundant trailing "/" to mkdir, as POSIX does not allow
mkdir to ignore it.
Do not report mkdir error if old_files_option == KEEP_OLD_FILES.