Sub-emitters of particle systems do not seem to respect their parent's rotation, and instead emit as if they weren't rotated at all.

Reproduction Steps:
1. Select the 'Particle System'
2. Observe the emission effect with a ring of particles (the subemitter) exploding out from around the qua (main emitter)
3. Rotate the main emitter, and observe that the ring of particles doesn't update where it's initially emitting from

Expected Result:
Sub-emitters should emit based on their rotation relative to their parent.

Note that this isn't simply an issue of being a child transform, as repeating this test by taking the SubEmitterBirth gameobject and placing it inside a new transform shows that it will correctly inherit it's parent transform's rotation. Also, changing between World/Local space does not change the behaviour here.

Reproducible in versions 5.4.4p4, 5.5.2f1 and 5.6.0b9.