Обсуждение: pgsql: Add documentation on the use of *printf() macros and libintl.

Log Message:
-----------
Add documentation on the use of *printf() macros and libintl.

Backpatch to 8.1.X.

Modified Files:
--------------
    pgsql:
        configure (r1.465 -> r1.466)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.465&r2=1.466)
        configure.in (r1.435 -> r1.436)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.435&r2=1.436)
    pgsql/src/include:
        port.h (r1.86 -> r1.87)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/port.h.diff?r1=1.86&r2=1.87)