Added a new test making sure properties conditioned on multiple different feature values are handled correctly. This especially includes testing the case when one of those features is <toolset> and the value given for it includes a toolset version.

[SVN r42613]

tools/build

@@ -1 +1 @@
-Subproject commit 51ba182420821c634a03826c5517e5cca785b451
+Subproject commit 50329a58c4c1473def8867d2f5d9693268caddff