Improve glue with libpq.

CHANGES

@@ -1266,8 +1266,11 @@ o foreach( arr[-two()..], string x), where two() returns 2 will no
   longer iterate over the first element in the array three times or
   crash.
 
+o Postgres.postgres_result now properly decodes binary blobs and
+  strips trailing spaces from CHAR columns.
+
 o Fixed a typo from 2001-05-05 that caused a lot of countries to
-  recide on the continent ',Europa' instead of "Europa" in
+  reside on the continent ',Europa' instead of "Europa" in
   Geography.Countries.
 
   Obviously the continent is not that often checked.

src/modules/Postgres/pgresult.c

@@ -115,7 +115,10 @@ extern PIKE_MUTEX_T pike_postgres_mutex;
 
 #include "pg_types.h"
 
-
+#ifndef BYTEAOID
+#define BYTEAOID        17
+#define BPCHAROID       1042
+#endif
 
 #define THIS ((struct postgres_result_object_data *) Pike_fp->current_storage)