Thanks for your reply PaulS,
What if I just want to #include LiquidCrystal.h without knowing where it lives?
If i do this:
#include <LiquidCrystal.h>
, then the compiler complains that it cannot find it, so I have to copy LiquidCrystal.h and LiquidCrystal.cpp to my custom library folder and use:
#include "LiquidCrystal.h"
Is there a nicer way?