[reSIProcate] GNU autotool macro to check resiprocate libraries

[Volodymyr Tarasenko]

> 
> Дякую! I've checked this
> into the current tree. I think we've already
> branched for the 1.6 release, so it won't get picked up
> automatically.
Будь ласка ;)

> 
> Byron: I'm hardly an autotools expert, but this appears
> to pass a basic
> sanity check (reading, not passing it through autotools)
> for an
> application that wants to use a stock
> resip-ares/rutil/resip/dum setup.
> There is a lot of room for improvement (e.g., for apps that
> want to use
> more or less than this set; version detection support; and
> inclusion of
> the proper frameworks under OS X), but I figure this is
> both better
> than nothing and a good starting support for anyone who
> wants to
> improve things.
Yes, I know that this macro needs some improvements, and I'm going to post the improved version in a few days, so I'd appreciate any feedback about this macro. 

Regards,
Volodymyr!