Make the Wire format align data correctly

[Kangz]

In the wire format, an NXT command that takes parameters like these (const char* name, uint32_t numIds uint32_t* ids) doesn't have ids aligned (and the wire allocator don't necessarily returned aligned memory either). This is not great for performance in native but would kill performance of a JS-side wire client, that would have to use a DataView type of API. If things are aligned, a JS wire-client could instead use a combo of both a UInt8Array and UInt32Array which get optimized by V8 (and probably other JS engines).