int64 support broken

[jmspring]

javascript doesn't support 64bit integers. recommended solution - add support for node-int64

[jmspring]

specifically - need to support amqp long, ulong, decimal64, and timestamp

[jmspring]

just a note - values that require only up to about 53bits. Specifically see:

http://ecma262-5.com/ELS5_HTML.htm#Section_8.5

[jmspring]

Options to consider -

• node-int64
• node-bigint
• node-bignum
• big-integer