hidekuro c4a8f446c6 git: Use update instead of foreach in alias 'gSu' ...

Modern `git` can use `submodule` option `update` instead of `foreach`
to achieve approximately similar outcome.

To allows call without assuming that all submodules will have default
branch as `master`, the preferred approach would be to call
`git submodule update --remote --recursive` after registering the
correct branch for submodule in `.gitmodules`:

```
git config -f .gitmodules submodule.<path>.branch <branch>
```

For more discussion, see: https://stackoverflow.com/a/33835815

Signed-off-by: Indrajit Raychaudhuri <irc@indrajit.com>

2021-05-21 13:40:49 -05:00

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