pgsql-server: Fixed handling of cyclic defines.

Log Message:
-----------
Fixed handling of cyclic defines.

Tags:
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REL7_4_STABLE

Modified Files:
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pgsql-server/src/interfaces/ecpg/preproc:
ecpg.c (r1.81.2.1 -> r1.81.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/ecpg.c.diff?r1=1.81.2.1&r2=1.81.2.2)
pgc.l (r1.122.2.2 -> r1.122.2.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/pgc.l.diff?r1=1.122.2.2&r2=1.122.2.3)
type.h (r1.40.4.1 -> r1.40.4.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/type.h.diff?r1=1.40.4.1&r2=1.40.4.2)