pgsql: pageinspect: Try to fix some bugs in previous commit.

pageinspect: Try to fix some bugs in previous commit.

Commit 08bf6e529587e1e9075d013d859af2649c32a511 seems not to have
used the correct *GetDatum and PG_GETARG_* macros for the SQL types
in some cases, and some of the SQL types seem to have been poorly
chosen, too. Try to fix it. I'm not sure if this is the reason
why the buildfarm is currently unhappy with this code, but it
seems like a good place to start.

Buildfarm unhappiness reported by Tom Lane.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/ed807fda6d5102537daa5d725e716555cbc49f44

Modified Files
--------------
contrib/pageinspect/hashfuncs.c | 28 +++++++++++++--------------
contrib/pageinspect/pageinspect--1.5--1.6.sql | 10 +++++-----
2 files changed, 19 insertions(+), 19 deletions(-)