Bug 951457 - Create C++ CSP Parser and policy classes, part 0 - parser and utils r=sstamm, r=jst
Bug 951457 - Create C++ CSP Parser and policy classes, part 1 - backend stubs r=sstamm, r=grobinson
Bug 951457 - Create C++ CSP Parser and policy classes, part 2 - contentpolicy tiein r=sstamm, r=grobinson
Bug 951457 - Create C++ CSP Parser and policy classes, part 3 - parser tests r=sstamm, r=grobinson