#701 AntFarm: Property values should be replaced before parsing

[Alan Ezust]

If you set properties in the AntFarm plugin options,
those values should be replaced before AntFarm parses
any build.xml.

e.g.

Console has this in its build.xml:

<property file="../build.properties" />
<import file="${build.support}/plugin-build.xml" />

If there is no property file, but the ${build.support}
is set from antfarm props, then it should be replaced
before the file is parsed. But it is not.