Hey, I created a new rpm spec. I already test it on rhel6 32bit and 64bit and works well both.
dmd.spec http://pastebin.com/VYtkVHZ0 make_src.sh http://pastebin.com/UCUacyn2 dmd-2.058.src.tar.gz are generate by make_src.sh with dmd.2.058.zip. other files (source1~3) you can found them at http://ftp.digitalmars.com/dmd-2.058-0.fedora.x86_64.rpm or http://www.ownrepos.org/dl/rhel/6/stable/SRPMS/dmd-2.058-1.el6.src.rpm You can modify and use them anywhere, enjoy it.
