Import Abseil LTS version 20230802.0
Deal with files which contain pragma(s) suppressing important diagnostics:
inst/include/absl/base/internal/invoke.h
inst/include/absl/container/internal/inlined_vector.h
Files which contain non-portable pragma(s):
inst/include/absl/base/internal/invoke.h
inst/include/absl/container/inlined_vector.h
inst/include/absl/functional/internal/any_invocable.h
inst/include/absl/random/internal/explicit_seed_seq_test.cc
inst/include/absl/strings/internal/cord_rep_flat.h
inst/include/absl/types/internal/optional.h
Files which contain pragma(s) suppressing diagnostics:
inst/include/absl/algorithm/algorithm_test.cc
inst/include/absl/container/inlined_vector.h
inst/include/absl/container/internal/counting_allocator.h
inst/include/absl/container/internal/raw_hash_set_test.cc
inst/include/absl/functional/internal/any_invocable.h
inst/include/absl/random/internal/explicit_seed_seq_test.cc
inst/include/absl/random/internal/randen_detect.cc
inst/include/absl/random/internal/randen_hwaes.cc
inst/include/absl/strings/internal/cord_rep_flat.h
inst/include/absl/strings/internal/str_format/bind_test.cc
inst/include/absl/strings/internal/utf8_test.cc
inst/include/absl/strings/str_split_test.cc
inst/include/absl/types/internal/optional.h