Review Request: 8004045: build-infra: Error 12 from zip when updating src.zip

[Fredrik Öhrström]

Looks good.

2012/11/27 Erik Joelsson <erik.joelsson at oracle.com>:
> Small fix for common annoyance when rebuilding images. The zip utility
> returns 12 when it has nothing to do. This happens because we run it
> multiple times, once for each source root, when updating src.zip, even if
> only sources in one of the roots have changed.
>
> http://cr.openjdk.java.net/~erikj/8004045/webrev.root.01/
>
> /Erik