DMD 1.026 and 2.010 releases

[Jason House]

Sean Kelly Wrote:
> Why can't an interface be deleted?
> We currently do this in a number of places within Tango, and I'm
> delaying upgrading to DMD 1.026 for now because of this.

This isn't specific to D 1.026.  It's an area of unstable behavior that's been in dmd for quite a while.  It bit me, and I submitted a bug report.  I interpret what happened in D 1.026 to be a temporary patch to help prevent others from hitting this type of issue.  It may help to post the functional cases from tango to the bug report to help Walter diagnose/fix the problem.