It includes everything other than stuff you wear - trap harnesses, etc.
Here's the quote from the rule book:
19. MINIMUM BOAT WEIGHTS
19.1 The minimum boat weights shown in the individual Class Rules are for each class of boat, ready to sail, with all permanently attached and non movable racing equipment EXCLUDING the following:
a) Cushions
b) Life jackets
c) Trapeze harnesses
d) Tool bags
e) Personal gear
f) Crew weight
19.2 All weights required to bring a boat to minimum weight shall be permanently attached during a regatta and shall not be usable for any other purpose.
