Bump chisel3 and firrtl, update plugin versions

And update chisel3 code

Provide correct trace insn on interrupts when possible

Auto diplomacy bundles

Tl error

Separate interrupt bit from cause field in trace bundle

Move rocket output interrupt syncronizers

closes #1017

FlipRendering { implicit p => ... } now changes the render direction of edges.
diplomatic NodeImps can specify a default render flip using the new 'render' method.

coreplex: clean up coherence manager attachment point

If two (or more) 'auto_' things have the same name, append _0 and _1 to them.

The order of definitions is unaffected; ie:
  a => a_0
  b => b_0
  b => b_1
  c => c
  a => a_1