pgsql: Simplify functions and parameters used by pg_upgrade.

Simplify functions and parameters used by pg_upgrade.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=25cc7424e3b4d3bd76fa54bfc6907f294b4b99d1

Modified Files
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contrib/pg_upgrade/dump.c | 1 -
contrib/pg_upgrade/info.c | 144 +++++++++++++++++++-------------------------
2 files changed, 62 insertions(+), 83 deletions(-)