Add a comment as to why searched-lib instances with different properties

won't be confused.


[SVN r17103]

tools/build

@@ -1 +1 @@
-Subproject commit ac16b8eb56e5022356717cd4044dcbbdb9587771
+Subproject commit 686ad5a7d21b9e9a8a69831b9cb2c7752cc67e66