Use the passed in command instead of a fixed one to account for custom and versioned commands. Thanks to Jurge Hunold for the report/patch.

[SVN r35741]

tools/build

@@ -1 +1 @@
-Subproject commit 840439f061a4962d74e0c37894411319b083bee2
+Subproject commit 4c423da9b66b7709669ff70cb24bda9333077207