Using single namespace for user scripts.
Using single namespace for user scripts.

- This allows script-level definitions to be accessible within
  user script functions.

mbedmicro/pyOCD,mesheven/pyOCD,flit/pyOCD,mesheven/pyOCD,mesheven/pyOCD,mbedmicro/pyOCD,pyocd/pyOCD,mbedmicro/pyOCD,pyocd/pyOCD,flit/pyOCD