Documentation - Add to release notes / known issues about starting Fuse on Windows with IP6 network issue

Fintan, we need to have this to the known issues and/or release notes.

See this knowledge space issue
https://access.redhat.com/site/solutions/757533

That solution still applies for Fuse 6.1 GA.

An alternative is to set the KARAF_OPTS as a global environment variable on your Windows box, instead of adjusting the bin/setenv.bat file.

Notice this problem appears to only be a problem if you run on a IP6 network with Windows and Java7.