few probs with integer timestamps

On FreeBSD/Alpha, current CVS:

gmake -C common SUBSYS.o
gmake[4]: Entering directory `/home/chriskl/pgsql/src/backend/access/common'
gcc -pipe -O -g -Wall -Wmissing-prototypes -Wmissing-declarations -I../../..
/../src/include -c -o heaptuple.o heaptuple.c -MMD
In file included from ../../../../src/include/utils/timestamp.h:24,
from ../../../../src/include/utils/nabstime.h:21,
from ../../../../src/include/access/xact.h:19,
from ../../../../src/include/utils/tqual.h:19,
from ../../../../src/include/access/relscan.h:17,
from ../../../../src/include/access/heapam.h:18,
from heaptuple.c:23:
../../../../src/include/utils/int8.h:35: warning: `INT64CONST' redefined
../../../../src/include/utils/pg_crc.h:85: warning: this is the location of
the previous definition
gcc -pipe -O -g -Wall -Wmissing-prototypes -Wmissing-declarations -I../../..
/../src/include -c -o indextuple.o indextuple.c -MMD
In file included from ../../../../src/include/utils/timestamp.h:24,
from ../../../../src/include/utils/nabstime.h:21,
from ../../../../src/include/access/xact.h:19,
from ../../../../src/include/utils/tqual.h:19,
from ../../../../src/include/access/relscan.h:17,
from ../../../../src/include/access/heapam.h:18,
from indextuple.c:19:
../../../../src/include/utils/int8.h:35: warning: `INT64CONST' redefined
../../../../src/include/utils/pg_crc.h:85: warning: this is the location of
the previous definition
gcc -pipe -O -g -Wall -Wmissing-prototypes -Wmissing-declarations -I../../..
/../src/include -c -o indexvalid.o indexvalid.c -MMD
In file included from ../../../../src/include/utils/timestamp.h:24,
from ../../../../src/include/utils/nabstime.h:21,
from ../../../../src/include/access/xact.h:19,
from ../../../../src/include/utils/tqual.h:19,
from ../../../../src/include/access/relscan.h:17,
from ../../../../src/include/nodes/execnodes.h:17,
from ../../../../src/include/nodes/plannodes.h:17,
from ../../../../src/include/executor/execdesc.h:19,
from ../../../../src/include/executor/executor.h:17,
from ../../../../src/include/executor/execdebug.h:17,
from indexvalid.c:19:
../../../../src/include/utils/int8.h:35: warning: `INT64CONST' redefined
../../../../src/include/utils/pg_crc.h:85: warning: this is the location of
the previous definition