pgsql: Add NO_PGPORT defines to fix win32/cygwin builds for new target

Log Message:
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Add NO_PGPORT defines to fix win32/cygwin builds for new target platform
build of zic.

Modified Files:
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pgsql/src/include:
port.h (r1.77 -> r1.78)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/port.h.diff?r1=1.77&r2=1.78)