Added information on where files are located by llvm-link.
Added missing options.
Re-worded some stuff so that it (hopefully) sounds better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8723 91177308-0d34-0410-b5e6-96231b3b80d8
Organized the commands into three distinct groups on the main page.
Fixed the hyperlinks in the main page.
Removed as and dis; they will not exist with those names by Release 1.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8485 91177308-0d34-0410-b5e6-96231b3b80d8
