pgsql: Fix function argument tab completion for schema-qualified or quo

Fix function argument tab completion for schema-qualified or quoted function names

Dean Rasheed, reviewed by Josh Kupershmidt

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/3644a63984cbdba2c78c22fd9a0cdb0f4701b600

Modified Files
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src/bin/psql/tab-complete.c | 63 +++++++++++++++++++++++++++++++-----------
1 files changed, 46 insertions(+), 17 deletions(-)