[Java] Fix endianness when accessing string fields. [C] Rename AERON_GET_VOLATILE -> AERON_GET_ACQUIRE and AERON_PUT_ORDERED -> AERON_SET_RELEASE to reflect the actual semantics of those operations ...

We study numerically and analytically spatial properties of the ground state of a fundamental string in the light-cone gauge. We find that strings are smooth and have divergent average size.