Revision 1309743

- fixes from upstream binutils 2.31 branch
  * PR ld/23499:  Always clear h->verinfo.verdef when overriding a
    dynamic definition
  * PR ld/23499: elf: Check for corrupt symbol version info
  * gas: Improve the code in the assembler to detect and reject a
    duplicate input and output file
  * gas: Fix Aarch64 bug in warning filtering