DMD 1.004 release

[Bill Baxter]

Walter Bright wrote:
> Fixes mixin gc bug.
> 
> http://www.digitalmars.com/d/changelog.html
> 
> http://ftp.digitalmars.com/dmd.1.004.zip

Amazing turnaround time!
But no dice.  The bug may be fixed but I can't tell because I get:

 > Assertion failure: 'classinfo->structsize == CLASSINFO_SIZE' on line 
  316 in file 'toobj.c'
 > abnormal program termination

when I try to compile.

--bb