pgsql: Skip pg_baseback long filename test if path too long on Windows

Skip pg_baseback long filename test if path too long on Windows

On Windows, it's sometimes difficult to create a file with a path longer
than 255 chars, and if it can be created it might not be seen by the
archiver. This can be triggered by the test for tar backups with
filenames greater than 100 bytes. So we skip that test if the path would
exceed 255.

Backpatch to all live branches.

Reviewed by Daniel Gustafsson

Discussion: https://postgr.es/m/666ac55b-3400-fb2c-2cea-0281bf36a53c@dunslane.net

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/1fa25ce70f0901b5b55b1fe9ca10cb3b9905db97

Modified Files
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src/bin/pg_basebackup/t/010_pg_basebackup.pl | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)