{"approve": "version update 0.153 -> 0.155 covered by ldb"}

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- add elfutils-aarch64.patch to support aarch64
- update to 0.155
libelf: elf*_xlatetomd now works for cross-endian ELF note data.
elf_getshdr now works consistently on non-mmaped ELF files after
calling elf_cntl(ELF_C_FDREAD).
Implement support for ar archives with 64-bit symbol table.
[g]elf[32|64]_offscn() do not match SHT_NOBITS sections at OFFSET.

libdw: dwarf.h corrected the DW_LANG_ObjC constant name (was DW_LANG_Objc).
Any existing sources using the old name will have to be updated.
Add DW_MACRO_GNU .debug_macro type encodings constants, DW_ATE_UTF
and DW_OP_GNU_parameter_ref to dwarf.h.
Experimental support for DWZ multifile forms DW_FORM_GNU_ref_alt
and DW_FORM_GNU_strp_alt. Disabled by default. Use configure
--enable-dwz to test it.
dwarf_highpc function now handles DWARF 4 DW_AT_high_pc constant form.
Fix bug using dwarf_next_unit to iterate over .debug_types.

elflint: Now accepts gold linker produced executables.

readelf: Add .debug_macro parsing support.
Add .gdb_index version 7 parsing support.
Recognize DW_OP_GNU_parameter_ref.

backends: Add support for Tilera TILE-Gx processor.

translations: Updated Ukrainian translation.

The license is now GPLv2/LGPLv3+ for the libraries and GPLv3+ for stand-alone
programs. There is now also a formal CONTRIBUTING document describing how to