My ALT_OUTPUTDIR had ending / and full forest build failed.

Investigation shows that stripproperties.jar build in the corba ws contain malformed class names.
Not just package and classname but full paths from the root.

jar is built using "jar -C classdir" but classdir had 2 slash chars in a row (due to extra trailing slash).
Removing trailing / fixes the isssue.

May be this is the problem with JRE 1.6 fcs only (it was used as default bootstrap for my solaris build) but it is
better to make build less fragile and normalize paths by trimming extra / symbols when ALT_ values are processed.