I originally wanted to batch the symbolication requests but that just
makes the client logic significantly more complicated with no real
benefit other than architectural feelgood points.
This patch adds SymbolServer, a service daemon that provides
symbolication of ELF binaries. It has a very simple IPC API at the
moment that only turns addresses into symbol names.
This can be used to implement symbolication without having to do
in-process ELF parsing yourself. :^)
