Merge branch 'bw/push-dry-run'

"git push --dry-run --recurse-submodule=on-demand" wasn't
"--dry-run" in the submodules.

* bw/push-dry-run:
push: fix --dry-run to not push submodules
push: --dry-run updates submodules when --recurse-submodules=on-demand

diff --cc submodule.c
Simple merge

diff --cc transport.c
Simple merge