#188 Make XDoclet module path variable

[daro]

Make the XDoclet module path variable with properties
so a developer can change the path in his project.
One solution is to change the "configuration2xdoclet.xsl"
Stylesheet and include some attributes.
I've added an example where a property with the
name "xdoclet.lib" in the file "build.properties" can
override the default path to the XDoclet module libraries.

[daro]

Sample configuration2xdoclet.xsl

[Laurent Etiemble]

Logged In: YES
user_id=437455

This cannot be done simply.
JBoss-IDE 1.3.0 introduces new Eclipse libraries that can only be
resolved as absolute paths. They are integrated in the build file. The
xdoclet-build.xml is now regenerated each time the XDoclet build is
launched.