pgsql: pg_basebackup: Adjust tests for long file name issues

pg_basebackup: Adjust tests for long file name issues

Work around accidental test failures because the working directory path
is too long by creating a temporary directory in the (hopefully shorter)
system location, symlinking that to the working directory, and creating
the tablespaces using the shorter path.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/926f5cea472676b8378f02cd80c2c5f86226d981

Modified Files
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src/bin/pg_basebackup/t/010_pg_basebackup.pl |   15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)