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(region_list_head, region_list_tail, lca, nlc, infile_lc_highest_addr)
(text_seg_lowest_offset, mh, curr_header_offset, infd, outfd)
(emacs_zone, data_segment_old_fileoff, data_segment_scp)
(num_unexec_regions, unexec_regions): Make variables static.
(print_regions, find_emacs_zone_regions): Make static.
(unexec_region_info): New typedef.
(unexec_regions): Change type from vm_range_t[] to unexec_region_info[].
All uses changed.
(unexec_regions_recorder): Subtract size of trailing null pages from
filesize.  Show filesize.
(unexec_regions_merge): Don't merge if null pages of preceding region
is not too small.  Use long format in printf.
(copy_segment, copy_data_segment): Show filesize.
(copy_data_segment): Write filesize bytes of region data.  Adjust
filesize in segment command accordingly.
(dump_it): Use long format in printf.