Thread: pgsql: Add some comments about the safety of accessing rolpassword

Log Message:
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Add some comments about the safety of accessing rolpassword without using
the normal heap_getattr() machinery.  Per Greg Stark.

Modified Files:
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    pgsql/src/backend/utils/init:
        flatfiles.c (r1.25 -> r1.26)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/init/flatfiles.c.diff?r1=1.25&r2=1.26)