nodejs: Fix build for qemux86-64

:Release Notes:
64bit build for target device doesn't always work correctly on 64bit
build machine, e.g. qemux86-64 binary doesn't work on 64bit Ubuntu.

:Detailed Notes:
Fix that by using mksnapshot from nodejs-native when building target
nodejs.

:Testing Performed:
Only build tested.

:QA Notes:
No change in image.

:Issues Addressed:
[GF-2506]  Upgrade Node.js to v0.10
[GF-41162] CCC: nodejs=r3

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: Iaf5bfa52775b47822237aabe2b3f65940b0addee
Reviewed-on: https://g2g.palm.com/3625
Reviewed-by: Mark Bessey <mark.bessey@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Tested-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Jongho Kim <jongho1208.kim@lge.com>
Tested-by: Jongho Kim <jongho1208.kim@lge.com>