recipe: enable snapshots and fix mkpeephole compilation for Node.js 7.0.0 and V8
recipe: enable snapshots and fix mkpeephole compilation for Node.js 7.0.0 and V8

Node.js 7.0.0 ships with V8 version that requires building
mkpeephole utility using build host toolchain.

This might require g++-multilib to be installed on build host to support
g++ compilation with -m32 and -m64.

Signed-off-by: Ilkka Myller <716e5e229328bd2f78a6c88465a2d082928d5905@nodefield.com>

mdavis777/meta-nodejs,geomatsi/meta-nodejs,imyller/meta-nodejs,geomatsi/meta-nodejs,mdavis777/meta-nodejs,imyller/meta-nodejs