pgsql: Add -d/--dbname option to pg_dump.

Add -d/--dbname option to pg_dump.

You could already pass a database name just by passing it as the last
option, without -d. This is an alias for that, like the -d/--dbname option
in psql and many other client applications. For consistency.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/691e595dd9c7786d37d73ccd327f8c2b6f0dace6

Modified Files
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doc/src/sgml/ref/pg_dump.sgml |   20 ++++++++++++++++++++
src/bin/pg_dump/pg_dump.c     |   15 ++++++++++++---
2 files changed, 32 insertions(+), 3 deletions(-)