Allow

   lib z jpeg : : <search>x ;

to work. Previously, this would complain that you specify requirements
together with multiple names.


[SVN r27059]

tools/build

@@ -1 +1 @@
-Subproject commit a61866bbe530d6346b370933e1bd01bd59a69ac2
+Subproject commit 3d5b4963c6709e69a33f05e5336fcb49623b404f