Function that allows inspection of output and return code - execresult_as_data()

It would be nice if there were a function that would allow me to inspect the return code and output from a command execution, combining some of the usefulness of returnszero() and execresult().

Perhaps data_execresult() where instead of returning a string or a class, it would return a data container that included the return code and output.

{
  "returncode": "0",
  "output": "I've got a lovely bunch of coconuts."
} 

As indicated in CFE-3108, it would be nice to have the ability to differentiate ate between stderr and stdout.

{
  "returncode": "0",
  "output": "ERROR: palm trees don't grow here."
} 

{
  "returncode": "0",
  "output": "I've got a lovely bunch of coconuts.
ERROR: palm trees don't grow here."
}