[patch] Use --enable-libstdcxx-time=yes on DragonFly BSD

[Jonathan Wakely]

On 10/03/15 20:55 +0100, John Marino wrote:
>On 3/10/2015 20:23, Jonathan Wakely wrote:
>> John, assuming I'm right that dragonfly supports all these features,
>> could you test this change?  (You'll need the same change on line
>> 19555 of the libstdc++-v3/configure script.)
>>
>
>Sure, I can test it.  How can I tell if the result is successful?
>Successful build versus failed build?

Yes, that should be enough. If any of sched_yield(), nanosleep(),
clock_gettime() etc. is missing you'll get a build failure.

I'll do a full testsuite run (bootstrap and 'make check') on dragonfly
before committing, but I'll need some time to resurrect the dragonfly
VM I was using previously.