Merge branch 'rr/triangle'

Support "pull from one place, push to another place" workflow better by introducing remote.pushdefault (overrides the "origin" thing) and branch.*.pushremote (overrides the branch.*.remote). * rr/triangle: remote.c: introduce branch.<name>.pushremote remote.c: introduce remote.pushdefault remote.c: introduce a way to have different remotes for fetch/push t5516 (fetch-push): drop implicit arguments from helper functions t5516 (fetch-push): update test description remote.c: simplify a bit of code using git_config_string()