Refactor to eliminate duplicate copies of conninfo default-finding code.

Alex Shulgin, lightly edited by me

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/e9ce658b6203e9052bff5c89ed6265fba69cdb36

Modified Files
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src/interfaces/libpq/fe-connect.c |  185 +++++++++++++++++--------------------
1 files changed, 84 insertions(+), 101 deletions(-)

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