vinly-fs already supports symlinks.
gulp-symdest
Like gulp.dest, but handles symlinks.
Details
It assumes that if a vinyl file
has a field symlink, then it is a string with the value for the
symlink itself.
Usage
var gulp = require('gulp');
var symdest = require('gulp-symdest');
gulp.task('default', function () {
return gulp.src('path_with_symlinks/**')
.pipe(symdest('out'));
});