The org.robolectric.res.builder package is for android-referencing resource builders.
Move DrawableBuilder to there.
Extract PreferenceBuilder.
Move ResName and Attribute to org.robolectric.res.
Rename and move TestAttributeSet to org.robolectric.shadows.RoboAttributeSet.
Rename and move RoboLayoutInflater to org.robolectric.res.builder.LayoutBuilder.
Move RobolectricPackageManager to org.robolectric.builder.
Extract XmlFileBuilder.
Merge branch 'robolectric-2/load-res-in-base-cl' into robolectric-2-master

* robolectric-2/load-res-in-base-cl:
  Extract XmlFileBuilder.
  Move RobolectricPackageManager to org.robolectric.builder.
  Rename and move RoboLayoutInflater to org.robolectric.res.builder.LayoutBuilder.
  Rename and move TestAttributeSet to org.robolectric.shadows.RoboAttributeSet.
  Move ResName and Attribute to org.robolectric.res.
  The org.robolectric.res.builder package is for android-referencing resource builders. Move DrawableBuilder to there. Extract PreferenceBuilder.