Make the bugpoint link reference the man page in the CommandGuide until
the Bugpoint.html file can describe bugpoint in a little more of a tutorial
style instead of just being a man page.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17416 91177308-0d34-0410-b5e6-96231b3b80d8