pgsql: Small message clarifications - Mailing list pgsql-committers

Log Message:
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Small message clarifications

Modified Files:
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    pgsql/src/backend/access/transam:
        xlog.c (r1.175 -> r1.176)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xlog.c.diff?r1=1.175&r2=1.176)
    pgsql/src/backend/commands:
        tablespace.c (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/tablespace.c.diff?r1=1.12&r2=1.13)
    pgsql/src/backend/main:
        main.c (r1.91 -> r1.92)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/main/main.c.diff?r1=1.91&r2=1.92)
    pgsql/src/backend/postmaster:
        bgwriter.c (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/bgwriter.c.diff?r1=1.10&r2=1.11)
    pgsql/src/backend/storage/smgr:
        smgr.c (r1.82 -> r1.83)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/smgr/smgr.c.diff?r1=1.82&r2=1.83)