Here the patch to /src/include/pg_config_os.h attached improving
Borland C++ Compiler compatibility.
Issues described here:
http://pgolub.wordpress.com/2009/04/13/building-postgresql-client-library-using-borland-c-compiler-bcc-under-winxp/
This patch defines missing constants needed by /port/dirent.c and /port/open.c
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Nullus est in vitae sensus ipsa vera est sensus.