Various pages use inconsistent terms for 'null byte' (which
is the C99/SUSv3 term for the '\0' character).
To rectify this the following changes were made in these pages:
Replace 'zero byte' with 'null byte'.
Replace 'null character' with 'null byte'.
Replace 'nulls' with 'null bytes'.
Replace 'NUL-terminated' by 'null-terminated'.
Replace 'NUL' by 'null byte'.
Replace 'terminating NUL' by 'terminating null byte'.
Replace 'final NUL' by 'terminating null byte'.
Replace 'NUL character' by 'null byte'.
tweaked the short description to include definition of 'ELF'
add ELFOSABI_NONE to the ELFOSABI_ list
tweak/add more machines to EM_ list for ehdr->e_machine
fix indenting to be consistent
tweak the display of the ELF_ST_* macros
document the Elf_Dyn structure