pgsql: Remove PGDLLIMPORT used for binary upgrade; must be on the

Log Message:
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Remove PGDLLIMPORT used for binary upgrade; must be on the externs, per Tom.

Modified Files:
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pgsql/src/backend/catalog:
pg_type.c (r1.129 -> r1.130)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/pg_type.c?r1=1.129&r2=1.130)
toasting.c (r1.24 -> r1.25)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/toasting.c?r1=1.24&r2=1.25)
pgsql/src/backend/commands:
typecmds.c (r1.143 -> r1.144)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/typecmds.c?r1=1.143&r2=1.144)