Use the waf API for loading pkg-config info.
Use the waf API for loading pkg-config info.

Reading http://www.freehackers.org/~tnagy/testdoc/single.html#pkg_config made
it clear that we're doing things the hard way, lets simplify.

rbdr/exiv2node,SoftBricks/exiv2node,m0g/exiv2node,SoftBricks/exiv2node,SoftBricks/exiv2node,dberesford/exiv2node,m0g/exiv2node,dberesford/exiv2node,rbdr/exiv2node,rbdr/exiv2node,m0g/exiv2node,dberesford/exiv2node