* dwarf.c (process_debug_info): Check for corrupt lengths.

* dwarf.c (process_debug_info): Check for corrupt lengths.
* readelf.c (get_reloc_type): New function.  Returns the reloc number extracted from the info field of a reloc.
  (get_reloc_symindex): New function.  Returns the symbol index
  (extracted from the info field of a reloc.
  (dump_relocations): Use the new functions.
  (slurp_ia64_unwind_table): Use the new functions.
  (slurp_hppa_unwind_table): Use the new functions.
  (dump_section_as_bytes): Use the new functions.
  (get_reloc_size): Delete function.
  (is_32bit_abs_reloc): New function.  Determines if a given reloc type is a 32-bit absolute relocation.
  (is_32bit_pcrel_reloc): New function.  Like is_32bit_abs_reloc but for pc-relative relocations.
  (is_64bit_abs_reloc): New function.  Like is_32bit_abs_reloc but for 64-bit absolute relocations.
  (is_16bit_abs_reloc): New function.  Like is_32bit_abs_reloc but for 32-bit absolute relocations.
  (debug_apply_rela_addends): Use the new functions.  Skip and warn about any unrecognised relocations.