Fix sloppy omission of now-required #include's.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: cad3a26a9546dc6e3487bb2bb90a64e0cb05e6a0
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2008-11-11T14:17:02Z
Releases: 8.4.0
Fix sloppy omission of now-required #include's.

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