raptor: new package

raptor: new package

Raptor is a free software / Open Source C library that provides a set of parsers
and serializers that generate Resource Description Framework (RDF) triples
by parsing syntaxes or serialize the triples into a syntax.

http://librdf.org/raptor/

Patch added in the package:
0001-configure.ac-remove-conditional-lib-inclusion.patch

Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Nitin Mendiratta <nitin.mendiratta@rockwellcollins.com>
[Thomas:
 - add else clause for the three optional dependencies, as suggested
   by Baruch.
 - fix they yajl optional dependency, as noticed by Baruch.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>