Improved checks for scanf %lld and %qd as per gc-devel mail.

[Linas Vepstas]

On Sun, Jul 04, 2004 at 11:24:06PM -0400, Derek Atkins was heard to remark:
> Log Message:
> -----------
> Improved checks for scanf %lld and %qd as per gc-devel mail.

Scanf seems to be frequently broken in different libc's,
I've always strongly recommended that atoll be used instead, which
always seems to work reliably.   Note that atoll is no harder
to use that scanf.

--linas


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