waf: Dont install tests (except jack_test)

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2473 0c269be4-1314-0410-8aa9-9f06e86f4224

tests/wscript

@@ -18,3 +18,5 @@ def build(bld):
         prog.uselib = 'RT'
         prog.uselib_local = 'clientlib'
         prog.target = test_program
+        if test_program != 'jack_test':
+            prog.inst_var = 0