Push all repo recursively.

* bin/git-push-all: Here.
Correct spelling.

* bin/git-commit-sb: Here.
Delete unused alias.

* .gitconfig: undo.
List all submodules.

* bin/git-list-sb: Based on the .gitmodules
Commit all submodules

* bin/git-commit-all-sb: Based on git-commit-sb.
Push all based on git-list-sb.

* bin/git-push-all: Refactor time.
Don't check if the submodule is dirty.

* bin/git-commit-sb: Here.