Merge branch 'jt/conditional-config-on-remote-url'

The conditional inclusion mechanism of configuration files using
"[includeIf <condition>]" learns to base its decision on the
URL of the remote repository the repository interacts with.

* jt/conditional-config-on-remote-url:
  config: include file if remote URL matches a glob
  config: make git_config_include() static

diff --cc Documentation/config.txt
Simple merge

diff --cc config.c
Simple merge

diff --cc t/t1300-config.sh
Simple merge