2.17

• The FAKECHROOT_ELFLOADER environment variable changes the default dynamic
  linker. The fakechroot script provides --elfloader option.
• The FAKECHROOT_EXCLUDE_PATH environment variable overrides the default
  settings.
• The ldd(1) wrapper can work if overriden with FAKECHROOT_CMD_SUBST
  environment variable.
• New env(1) wrapper was added. It preserves fakechroot environment even
  for --ignore-environment option.
• The special environment none means that no environment settings are loaded
  at all.
• The function setenv(3) and unsetenv(3) was reimplemented, to prevent
  problems with binaries which brings own implementation of these functions.
• New function clearenv(3) was added. It preserves fakechroot environment.
• It is safe to use relative paths which won't escape from fake chroot.
• Fixes were made for readline(2) function if destination path is similar to
  FAKECHROOT_PATH.
• Fixes were made for mktemp(3) function if used on a path in
  FAKECHROOT_EXCLUDE_PATHS.
• The _xftw64(glibc) function is reenabled. It had wrong wrapper.
• Fixes were made for __realpath_chk(glibc) function when __chk_fail
  function is missing.
• New functions mkostemp(3), mkostemp64(3), mkostemps(3),
  mkostemps64(3), mkstemps(3) and mkstemps64(3) were implemented.
  It fixes sed -i command.