merge(third_party/git): Merge squashed git subtree at v2.23.0

Merge commit '1b593e1ea4' as 'third_party/git'

third_party/git/contrib/mw-to-git/t/Makefile

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+#
+# Copyright (C) 2012
+#     Charles Roussel <charles.roussel@ensimag.imag.fr>
+#     Simon Cathebras <simon.cathebras@ensimag.imag.fr>
+#     Julien Khayat <julien.khayat@ensimag.imag.fr>
+#     Guillaume Sasdy <guillaume.sasdy@ensimag.imag.fr>
+#     Simon Perrat <simon.perrat@ensimag.imag.fr>
+#
+## Test git-remote-mediawiki
+
+all: test
+
+-include ../../../config.mak.autogen
+-include ../../../config.mak
+
+T = $(wildcard t[0-9][0-9][0-9][0-9]-*.sh)
+
+.PHONY: help test clean all
+
+help:
+	@echo 'Run "$(MAKE) test" to launch test scripts'
+	@echo 'Run "$(MAKE) clean" to remove trash folders'
+
+test:
+	@for t in $(T); do \
+		echo "$$t"; \
+		"./$$t" || exit 1; \
+	done
+
+clean:
+	$(RM) -r 'trash directory'.*