Merge branch 'mg/pushurl'

* mg/pushurl:
  avoid NULL dereference on failed malloc
  builtin-remote: Make "remote -v" display push urls
  builtin-remote: Show push urls as well
  technical/api-remote: Describe new struct remote member pushurl
  t5516: Check pushurl config setting
  Allow push and fetch urls to be different

diff --cc builtin-remote.c
Simple merge

diff --cc remote.c
Simple merge

diff --cc remote.h
Simple merge