[dmd-beta] dmd regressions

[Walter Bright]

https://d.puremagic.com/issues/buglist.cgi?query_format=advanced&bug_severity=regression&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED

There are tons of pull requests, but the regression list is kinda twisting in 
the wind! I know that regressions are boring, but we need to get that list in 
shape. Me, I'll tackle the linker problem:

https://d.puremagic.com/issues/show_bug.cgi?id=11559