fixes the problem of some modules not being reachable from the 'base' dir
fixes the problem of some modules not being reachable from the 'base' dir

In node 4:
```
node_modules\commander\index.js ->
  node_modules\commander\node_modules\graceful-readlink\index.js
```
- With resolve in the base dir it won't find graceful-readlink, with a
  resolve on the location of the commander index it will.
- In node5/ npm3 this problem occurs less as the the node_modules tree
  is flattened.
- It still might, however, so I need to reproduce it in the fixtures

The build breaks because of this (with a 'cannot find this module')
After this it will still break, but with a unit test failure
(node_module structure differences between npm 2 and 3).

No time to update the unit test now so can just as well [ci skip] and
fix it up with a clear mind tomorrow evening ...

sverweij/js-makedepend,sverweij/js-makedepend