Changes the arch for HND01 to x86_64-r630.  (#202)
Changes the arch for HND01 to x86_64-r630.  (#202)

* Changes the arch for HND01 to x86_64-r630. They are R620s, but they won't boot with the x86_64 arch, as we discovered with the similar site IAD0T.

* Adds notes about the fact that iad0t and hnd01 have R620s, but the arch is 'x86_64-r630'.

m-lab/operator,m-lab/operator,critzo/operator,critzo/operator