initial.
fix comment alignment.
Add second entry of phdr.
Add phdr_2.
Add phdr_3.
Add phdr_4.
Add phentsize.
Add phnum.
Add interp string.
Add segment type.
Add section flags.
Add phsize.
Add interp.
Similify numbers.
Add section header label.
Add section header entities.
Add object file type and architecture constants.
Add ident members and comment section names.
Add ident member comments.
Add section flags.