Skip some permissions checks on Cygwin
These are checks that are already skipped on other Windows systems.
Backpatch to all live branches, as appropriate.
Branch
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REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/ca947649208ce7343c54c8f92e67ea9274be812c
Modified Files
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src/bin/initdb/t/001_initdb.pl | 2 +-
src/bin/pg_basebackup/t/010_pg_basebackup.pl | 15 +++++++++++----
src/bin/pg_ctl/t/001_start_stop.pl | 3 ++-
src/bin/pg_rewind/t/002_databases.pl | 2 +-
4 files changed, 15 insertions(+), 7 deletions(-)