Add ${ansi.XX} parsing to lldb prompt, use-color setting, and -no-use-colors command line options.
settings set use-color [false|true]
settings set prompt "${ansi.bold}${ansi.fg.green}(lldb)${ansi.normal} "
also "--no-use-colors" on the command prompt



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@182609 91177308-0d34-0410-b5e6-96231b3b80d8