remove default entry for library-mode builds
remove default entry for library-mode builds

There doesn't appear to be any known reason to automatically run the
root module for a library by default so we'll set that to false
initially and allow it to be overridden by the library if necessary.

Issue: ENYO-3216
Enyo-DCO-1.1-Signed-off-by: Ryan Duffy (ryan.duffy@lge.com)

enyojs/enyo-dev,enyojs/enyo-dev