Refs: #4297

Backwards compatibility is preserved (not planed to deprecate it)
The following are semantically equivalent:
-p local-path=/local/path,remote=path=/etc/local/path,mode=-rw-r--r--
-p /local/path,remote=path=/etc/local/path,mode=-rw-r--r--
-p /local/path,/etc/local/path,mode=-rw-r--r--