Open portability issues

Open portability issues:

/usr/local should be searched for lib and include for all ports if present
(currently not working, I have libreadline there)

the stream functions on AIX need a size_t for addrlen's in fe-connect.c and pqcomm.c.

lock.c still has an incompatible TPRINTF(flags, args...) definition

the long long int printf format in int8.h is %lld on AIX

AIX 4.2.1 and 4.3.1 need one other simpler Makefile, another template
and must not include dynloader.c


Andreas

PS: all unsigned char problems are gone.
keep it cidr not inet !!
and no, the heaptuple.c fix did not fix the pg_class index problem
sorry i am off to weekend now

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