Propagate GLIBC_TUNABLES in setxid binaries
GLIBC_TUNABLES scrubbing happens earlier than envvar scrubbing and some tunables are required to propagate past setxid boundary, like their env_alias. Rely on tunable scrubbing to clean out GLIBC_TUNABLES like before, restoring behaviour in glibc 2.37 and earlier. Signed-off-by:Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by:
Carlos O'Donell <carlos@redhat.com> (cherry picked from commit 0d5f9ea9)
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