[patch] only check for hg without --with-openjdk-src-zip

[Matthias Klose]

Andrew John Hughes schrieb:
> Is there a source zip file since the switch to Mercurial?

No, but it's needed to build packages on build daemons which don't have network
access.

> On http://download.java.net/openjdk/jdk7/ only a link to the Mercurial
> source is listed,
> and this still seems to be under discussion on the OpenJDK
> lists.  You can pull source from an individual repository but not the whole
> forest AFAIK.

I used the dist-target in IcedTea to build this file.

  Matthias