GETTIMEOFDAY_1ARG change

Hello together,

i would like to add the following changes to the code so that postgres
doesnt have any problems if we compile it on machines that have
gettimeofday with 1 ARG and therefore dont need 'struct timezone xxx'
Im working on a System where timezone is defined in another way.

1. nabstime.c
Datum
timeofday(PG_FUNCTION_ARGS)
{
...
#ifndef GETTIMEOFDAY_1ARG
struct timezone tpz;
#endif
...
}

2.postgres.c
ResetUsage(void)
{
#ifndef GETTIMEOFDAY_1ARG
struct timezone tz;
#endif

getrusage(RUSAGE_SELF, &Save_r);
gettimeofday(&Save_t, &tz);
ResetBufferUsage();
/* ResetTupleCount(); */
}

void
ShowUsage(void)
{
...
#ifndef GETTIMEOFDAY_1ARG
struct timezone tz;
#endif
...
}

3. postmaster.c
static int
ServerLoop(void)
{
...
#ifndef GETTIMEOFDAY_1ARG
struct timezone tz;
#endif
...
}

4. vacuum.c
void
vac_init_rusage(VacRUsage *ru0)
{
#ifndef GETTIMEOFDAY_1ARG
struct timezone tz;
#endif

getrusage(RUSAGE_SELF, &ru0->ru);
gettimeofday(&ru0->tv, &tz);
}

Thanks

Ulrich Neumann