build: run test/ directory first

R=adg, r
CC=golang-dev
https://golang.org/cl/4183047
diff --git a/doc/install.html b/doc/install.html
index 8630837..d8fa8b4 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -153,8 +153,7 @@
 </p>
 
 <pre>
---- cd ../test
-N known bugs; 0 unexpected bugs
+ALL TESTS PASSED
 
 ---
 Installed Go for linux/amd64 in /home/you/go.