[COMMITTERS] pgsql: Add some missing #includes.

[Tom Lane]

Log Message:
-----------
Add some missing #includes.

Modified Files:
--------------
    pgsql/src/backend/postmaster:
        fork_process.c (r1.1 -> r1.2)
        
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/fork_process.c.diff?r1=1.1&r2=1.2)

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TIP 4: Don't 'kill -9' the postmaster