Update lang/nodejs to 5.2.0.

build:
- Add support for Intel's VTune JIT profiling when compiled with
  --enable-vtune-profiling.
- Properly enable V8 snapshots by default. Due to a configuration
  error, snapshots have been kept off by default when the intention
  is for the feature to be enabled.

crypto:
- Simplify use of ECDH (Elliptic Curve Diffie-Hellman) objects
  (created via crypto.createECDH(curve_name)) with private keys
  that are not dynamically generated via generateKeys(). The
  public key is now computed when explicitly setting a private
  key. Added validity checks to reduce the possibility of
  computing weak or invalid shared secrets. Also, deprecated
  the setPublicKey() method for ECDH objects as its usage is
  unnecessary and can lead to inconsistent state.
- Update root certificates from the current list stored
  maintained by Mozilla NSS.
- Multiple CA certificates can now be passed with the ca option
  to TLS methods as an array of strings or in a single new-line
  separated string.

tools:
- Include a tick processor in core, exposed via the
  --prof-process command-line argument which can be used to
  process V8 profiling output files generated when using the
  --prof command-line argument.

(fhajny)