Cycles: Fix compilation error with latest OSL

They went back from string_view to string for compiler options.

Still having linking errors here, but maybe others will be more lucky to fully
compiler blender with new OSL.

intern/cycles/render/osl.cpp

@@ -251,7 +251,11 @@ void OSLShaderManager::shading_system_free()
 
 bool OSLShaderManager::osl_compile(const string& inputfile, const string& outputfile)
 {
+#if OSL_LIBRARY_VERSION_CODE < 10602
 	vector<string_view> options;
+#else
+	vector<string> options;
+#endif
 	string stdosl_path;
 	string shader_path = path_get("shader");