Include EGit 3.5.0 in 9.0

From Andre:

I'd argue that since OpenShift is using git our users would benefit from
any improvement in EGit. So big +1 for me!

> You mean +1 for 4.2.0/8.0.0 ?
> If so, do you think you can make extensive testing of this newer EGit
> and evaluate how well it integrates in JBT/JBDS before Thursday ?

yeah, worth it imho (if max agrees). I'll do that.

– http://lists.jboss.org/pipermail/jbosstools-dev/2014-September/009369.html