assert: Check typed array view type in deepEqual

Do not convert typed arrays to `Buffer` for deepEqual since
their values may not be accurately represented by 8-bit ints.
Instead perform binary comparison of underlying `ArrayBuffer`s,
but only when the array types match.

Never apply any kind of optimization for floating-point typed
arrays since bit pattern equality is not the right kind of check
for them.

PR-URL: https://github.com/nodejs/node/pull/5910


Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Fixes: https://github.com/nodejs/node/issues/5907