fork/exec portion of the port), and fixes a handful of whitespace issues

Claudio Natoli

word16, and word32.

intended to allow application authors to insulate themselves from
changes to the default value of 'default_with_oids' in future releases
of PostgreSQL.

This patch also fixes a bug in the earlier implementation of the
'default_with_oids' GUC variable: code in gram.y should not examine
the value of GUC variables directly due to synchronization issues.

variables, not just simple variables.  This was foreseen in the original
coding of this routine, but not implemented until now.  Responds to
performance gripe from Laurent Perez.

TRANSACTION.

'simple' references another view that is not simple.  Must recheck
conditions after performing recursive pullup.  Per example from
Laurent Perez, 9-Jan-04.

> * -Have psql '\i ~/<tab><tab>' actually load files it displays from home dir

Zach Irmen

select().   Add Win32 Sleep() for delay.

Claudio Natoli

ignore SIGPIPE from send() in libpq, but terminate on any other SIGPIPE,
unless the user installs their own signal handler.

This is a minor fix because the only time you get SIGPIPE from libpq's
send() is when the backend dies.

Ian Barwick

Report and fix from Martin Pitt.

datatype; the generic array comparators added in 7.4 supersede this.
Per report and patch from Korea PostgreSQL Users' Group.

Viktor Vislobokov

Give a more reasonable error message when lock file exists but has
zero length; prior code confused this with could-not-read-file case.

predicate tester.  It can now deal with commuted clauses (for
instance, 4 < x implies x > 3), subclauses more complicated than
a simple Var (for example, upper(x) = 't' implies upper(x) > 'a'),
and <> operators (for example, x < 3 implies x <> 4).  Still
only understands operators associated with btree opclasses, though.
Inspired by example from Martin Hampl.

pointer type when it is not necessary to do so.

For future reference, casting NULL to a pointer type is only necessary
when (a) invoking a function AND either (b) the function has no prototype
OR (c) the function is a varargs function.

it in the same file as the 'List' node.