Create initial testsuite

This creates a simple testsuite, heavily inspired by the testsuite in git.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

Makefile

@@ -24,7 +24,7 @@ ifdef NEEDS_LIBICONV
 endif
 
 
-.PHONY: all git install clean distclean emptycache force-version get-git
+.PHONY: all git test install clean distclean emptycache force-version get-git
 
 all: cgit git
 
@@ -54,6 +54,9 @@ git:
 	cd git && $(MAKE) xdiff/lib.a
 	cd git && $(MAKE) libgit.a
 
+test: all
+	$(MAKE) -C tests
+
 install: all
 	mkdir -p $(DESTDIR)$(CGIT_SCRIPT_PATH)
 	install cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)