Fix autocompletion for multi-word commands.

<rdar://problem/14183288>



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@196949 91177308-0d34-0410-b5e6-96231b3b80d8
Add the "--unix-socket" opton back as it was being used.

<rdar://problem/15622900>



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@196952 91177308-0d34-0410-b5e6-96231b3b80d8
Revert change I didn't mean to check in.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@196956 91177308-0d34-0410-b5e6-96231b3b80d8