fix "make upgrade" broken in r2759
diff --git a/auto/init b/auto/init
index e180441..56ecb19 100644
--- a/auto/init
+++ b/auto/init
@@ -43,36 +43,8 @@
 
 cat << END > Makefile
 
-build:
-	\$(MAKE) -f $NGX_MAKEFILE
-
-install:
-	\$(MAKE) -f $NGX_MAKEFILE install
+default:	build
 
 clean:
 	rm -rf Makefile $NGX_OBJS
-
-upgrade:
-	$NGX_SBIN_PATH -t
-
-	kill -USR2 \`cat $NGX_PID_PATH\`
-	sleep 1
-	test -f $NGX_PID_PATH.oldbin
-
-	kill -QUIT \`cat $NGX_PID_PATH.oldbin\`
-
-upgrade1:
-	# upgrade 0.1.x to 0.2+
-
-	$NGX_SBIN_PATH -t
-
-	cp $NGX_PID_PATH $NGX_PID_PATH.oldbin
-
-	kill -USR2 \`cat $NGX_PID_PATH\`
-	sleep 1
-	test -f $NGX_PID_PATH.oldbin
-
-	cp $NGX_PID_PATH $NGX_PID_PATH.newbin
-
-	kill -QUIT \`cat $NGX_PID_PATH.oldbin\`
 END