dist_id<T>::when_here() should require that the associated dist_object has not been destroyed

[Amir Kamil]

My reading of the reference does not prohibit when_here() from being called after the dist_object has been destroyed. This should be prohibited.

[Amir Kamil]

Fix Issue #88: dist_id<T>::when_here() should require that the associated dist_object has not been destroyed.

→ <<cset 0bb74a51ec0d>>

[Amir Kamil]

Fixed in 0bb74a5.