"git submodule" reports the paths of submodules the command
recurses into, but this was incorrect when the command was not run
from the root level of the superproject.
* sb/submodule-path-misc-bugs:
t7407: make expectation as clear as possible
submodule update: test recursive path reporting from subdirectory
submodule update: align reporting path for custom command execution
submodule status: correct path handling in recursive submodules
submodule update --init: correct path handling in recursive submodules
submodule foreach: correct path display in recursive submodules