PATCH: dg-require-{fork,mkfifo} for V3 testsuite

[Janis Johnson]

On Thu, May 05, 2005 at 04:11:57PM -0700, Mark Mitchell wrote:
> 
> This patch adds dg-require-fork and dg-require-mkfifo to the generic
> GCC test infrastructure, and then uses it in the V3 testsuite, instead
> of using "try_mkfifo" and blindly calling "fork", even on systems that
> don't support it.
> 
> OK to commit V3 bits?  Janis, any objections to GCC bits?

I'm still catching up after being away from mail for most of last week.

It's more flexible to use "dg-require-effective-target fork" than
dg-require-fork, since then the effective-target keyword "fork" can be
used in a selector expression with other effective-target keywords or
target triplets.  Until someone needs that capability, though, it's
fine.

Janis