Cycles: Fix missing packed images with newer versions of OSL

This isn't really complete fix, complete fix would require calculating
derivatives via OIIO API, but supporting this will either end up with
some code duplication or will require some non really safe changes at
this release cycle.

intern/cycles/kernel/osl/osl_services.h

@@ -104,6 +104,53 @@ public:
 	               const OSL::Vec3 &dPdx, const OSL::Vec3 &dPdy,
 	               const OSL::Vec3 &dPdz, int nchannels, float *result);
 
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+	bool texture(ustring filename,
+	             TextureHandle * /*texture_handle*/,
+	             TexturePerthread * /*texture_thread_info*/,
+	             TextureOpt &options,
+	             OSL::ShaderGlobals *sg,
+	             float s, float t,
+	             float dsdx, float dtdx, float dsdy, float dtdy,
+	             int nchannels,
+	             float *result,
+	             float * /*dresultds*/,
+	             float * /*dresultdt*/)
+	{
+		return texture(filename,
+		               options,
+		               sg,
+		               s, t,
+		               dsdx, dtdx, dsdy, dtdy,
+		               nchannels,
+		               result);
+	}
+
+	bool texture3d(ustring filename,
+	               TextureHandle * /*texture_handle*/,
+	               TexturePerthread * /*texture_thread_info*/,
+	               TextureOpt &options,
+	               OSL::ShaderGlobals *sg,
+	               const OSL::Vec3 &P,
+	               const OSL::Vec3 &dPdx,
+	               const OSL::Vec3 &dPdy,
+	               const OSL::Vec3 &dPdz,
+	               int nchannels,
+	               float *result,
+	               float * /*dresultds*/,
+	               float * /*dresultdt*/,
+	               float * /*dresultdr*/)
+	{
+		return texture3d(filename,
+		                 options,
+		                 sg,
+		                 P,
+		                 dPdx, dPdy, dPdz,
+		                 nchannels,
+		                 result);
+	}
+#endif
+
 	bool environment(ustring filename, TextureOpt &options,
 	                 OSL::ShaderGlobals *sg, const OSL::Vec3 &R,
 	                 const OSL::Vec3 &dRdx, const OSL::Vec3 &dRdy,