appease coverity vs extract2
update docs for ctpop opcodes
tcg/s390x build fix for gcc11

# gpg: Signature made Thu 11 Nov 2021 12:05:20 PM CET
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]

* tag 'pull-tcg-20211111' of https://gitlab.com/rth7680/qemu

:
  tcg/s390x: Fix tcg_out_vec_op argument type
  tcg: Document ctpop opcodes
  tcg: Remove TCI experimental status
  tcg/optimize: Add an extra cast to fold_extract2

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>