dmd 1.069 and 2.054 release

[Andrej Mitrovic]

Walter, could you please add these to the changelog:

http://d.puremagic.com/issues/show_bug.cgi?id=6026
http://d.puremagic.com/issues/show_bug.cgi?id=5869
http://d.puremagic.com/issues/show_bug.cgi?id=5836
http://d.puremagic.com/issues/show_bug.cgi?id=5598
http://d.puremagic.com/issues/show_bug.cgi?id=5458
http://d.puremagic.com/issues/show_bug.cgi?id=5059
http://d.puremagic.com/issues/show_bug.cgi?id=6101

These were all fixed since 2.043, but I didn't touch the changelog so
they were left out.

Great work everybody on this release!