==============

+ Fix how the very first program is launched by PRoot.  Previously,
  argv[0] was not preserved when the very first program was launched
  through a symbolic link.  This old behavior used to bug programs
  like Busybox and python-exec.  Thanks to "hhm", Ivailo "fluxer"
  Monev, and Joakim Tjernlund for the bug reports.

+ Fix renameat(2) sysexit support.  There was a bug in PRoot that was
  exposed by the Aarch64 (a.k.a arm64) port only but that might affect
  other architectures.

+ Fix build for AArch64.  Thanks to Rémi Duraffort for the patches and
  for the Debian/arm64 testing platform.

+ Fix support for "long" socket paths.  These can only be 108 bytes
  long; this limit might be easily reached with PRoot since the path
  to the rootfs is always prepended.  The solution was to
  automatically bind this long path to a shorter path.  This bug was
  exposed by LibreOffice and Yocto's pseudo.  Thanks to Christophe
  Guillon for the bug report.