Fix various uses of non-standard C++:

Fix various uses of non-standard C++:

* Replace u_int32_t with uint32_t
* Replace size_t with uint32_t for initializer list of TensorInfo
* Replace variable size arrays with std::vector
* Replace reference to local variable during its initialisation

Change-Id: I298b3995f1525f90a1ab2416d7e270315698fae3