Deep-copy `__namestack` decouples all instances of Autocall, previously it
worked as singleton. This allows to store call-chains as variables, aliases.
Target-object allows to avoid duplication of the target-parameter as required
with Autocall by storing them as variables.
Autocall_config renamed to Autocall for brevity.
Trying `rc.print()` causes redirection to native global Lua `print()`, which
prints to stdout. I don't see any proc of shor-circuiting `autocall_config`
with global environment `_G`.
PRESFIL