Stopped bootstrap reporting that it will substitute a build drive, thereby scaring the living daylights out of innocent users, when it won't any way (because this is the bootstrap).
--- a/bootstrap.xml Wed Jul 14 11:48:07 2010 +0100
+++ b/bootstrap.xml Wed Jul 14 16:18:17 2010 +0100
@@ -5,6 +5,7 @@
<dirname property="sf.bootstrap.dir" file="${ant.file.SF-CONFIG}"/>
+ <property name="build.drive" value="Setting this property stops helium reporting that it will use the Z: drive when it won't."/>
<import file="${helium.dir}/helium.ant.xml" />
<!-- target dir -->