[driver, doc] Support escaping special characters in specs

[Rainer Orth]

Hi Joseph,

> On Fri, 13 Jan 2017, Rainer Orth wrote:
>
>> I'm unsure if the patch is large enough to need a copyright assignment
>> (in which case it's almost certainly too late for GCC 7), and even if
>> not if it's appropriate at this point in the release cycle.
>
> I think it's big enough to need an assignment.

ok, then I'll get the ball rolling.  Are the forms on

	https://www.gnu.org/software/gnulib/Copyright/

current?  I didn't have to deal with the copyright assignment process so
far.

> Note missing spaces before '(' in calls to free, and after ')' in a cast.

Thanks, will fix.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University