Applied Zoltan's patch to make char the default sqlda type.

Given that undefined types are handled as character strings anyway the type
translation function can simply return the correcponding ECPGt_char type.

src/interfaces/ecpg/ecpglib/typename.c

-/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/typename.c,v 1.17 2010/01/13 08:41:48 meskes Exp $ */
+/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/typename.c,v 1.18 2010/01/13 09:06:51 meskes Exp $ */
 
 #define POSTGRES_ECPG_INTERNAL
 #include "postgres_fe.h"
@@ -136,7 +136,8 @@ sqlda_dynamic_type(Oid type, enum COMPAT_MODE compat)
 #ifdef HAVE_LONG_INT_64
 			return ECPGt_long;
 #endif
+		/* Unhandled types always return a string */
 		default:
-			return (-type);
+			return ECPGt_char;
 	}
 }