Function sweep

include/daScript/simulate/heap.h:258–265

            model.free(ptr,size);
        }
        virtual void sweep() override {
            model.sweep();
            if ( breakFreeAddr!=nullptr && !model.isAllocatedPtr((char *)breakFreeAddr,breakFreeSize) ) {
                printf("COLLECTED: breakFreeAddr = %p, breakFreeSize = %llu\n", breakFreeAddr, (unsigned long long)breakFreeSize);
                breakFreeAddr = nullptr;
                breakFreeSize = 0;
            }
        }
#else
    public:
        virtual void impl_free ( char * ptr, uint64_t size ) override {