update pginterface

contrib/pginterface/README

@@ -6,30 +6,6 @@ Attached is a copy of the Postgres support routines I wrote to allow me
 to more cleanly interface to the libpg library, more like a 4gl SQL
 interface.
 
-It has several features that may be useful for others:
-
-I have simplified the C code that calls libpq by wrapping all the
-functionality of libpq in calls to connectdb(), doquery(), fetch(),
-fetchwithnulls() and disconnectdb().  Each call returns a structure or
-value, so if you need to do more work with the result, you can.  Also, I
-have a global variable that allows you to disable the error checking I
-have added to the doquery() routine.
-
-I have added a function called fetch(), which allows you to pass
-pointers as parameters, and on return the variables are filled with data
-from the binary cursor you opened.  These binary cursors are not useful
-if you are running the query engine on a system with a different
-architecture than the database server.  If you pass a NULL pointer, the
-column is skipped, and you can use libpq to handle it as you wish.
-
-There are two functions, get_result() and set_result(), that allow you
-to handle multiple result sets at the same time.
-
-There is a reset_fetch() that starts the fetch back at the beginning.
-
-There is a demo program called pginsert that demonstrates how the
-library can be used.
-
 You can create a library of pginterface.c and halt.c, and just include
 pginterface.h in your source code.