Don't link to -lz and assume it's existence: build a private library

for testing. Also, test both <name> and <search> in one test.


[SVN r17503]

tools/build

@@ -1 +1 @@
-Subproject commit 495874710e621867328fef88d7835bdc26b7f7e3
+Subproject commit cec1703a3bfb563bc33a36326269d26b38f93f28