Default build produces godot-cpp.linux.debug.64, but demo example SConstruct is looking for godot-cpp.linux.64

I was following the tutorial and had a linker problem at the last build step

I built godot-cpp with ```scons platform=linux generate_bindings=yes use_custom_api_file=yes custom_api_file=../api.json```.

then

```
scons platform=linux
...
/bin/ld: cannot find -lgodot-cpp.linux.64
```

What I have:
```
godot-cpp/bin/libgodot-cpp.linux.debug.64.a
```