fix boost layout, update submodule

gcontini

2019-12-01 d02fce46e19f1a7b77a952210974a875c493593f

 src/library/locate/ExternalDefinition.hpp

@@ -15,10 +15,12 @@

class ExternalDefinition: public LocatorStrategy {
private:
   const std::string m_location;
   const LicenseLocation* m_location;
   bool licenseDataIsBase64 = false;
public:
   ExternalDefinition(const char* location);
   virtual const std::vector<std::string> licenseLocations(EventRegistry& eventRegistry) const;
   ExternalDefinition(const LicenseLocation* location);
   virtual const std::vector<std::string> license_locations(EventRegistry& eventRegistry);
   virtual const std::string retrieve_license_content(const std::string &licenseLocation) const;
   virtual ~ExternalDefinition();
};