* Emit bytecode using a deque instead of a vector to be faster

* Emit bytecode using a deque instead of a vector to be faster
* Internal rep no longer has a constant pool
* Support emission of recursive types
* Don't output a constant pool for an external method
* The bytecode writer is no longer a module analyzer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@449 91177308-0d34-0410-b5e6-96231b3b80d8