LOCAL CHANGES

  - Replace snprintf with xasprintf in find_unique_cname
  - Squash uninitialized read of harnessbuf in run-test262.c
  - Change run-test262.c to not rebase configured paths
  - https://github.com/bellard/quickjs/pull/132
  - https://github.com/bellard/quickjs/pull/171
  - https://github.com/bellard/quickjs/pull/182

SYNCHRONIZATION POINT (`--date=format:"%a %b %d %H:%M:%S %Y %z"`)

  commit 2788d71e823b522b178db3b3660ce93689534e6d
  Author: bellard <6490144+bellard@users.noreply.github.com>
  Date:   Sun Mar 06 19:00:24 2022 +0100

      updated to Unicode 14.0.0
