Change way we report Eclipse version in stat ping.

This reverts the way Change I14dba0dd was sending
the Eclipse version. Instead of passing a new attribute,
we reuse the existing "app=>version" format, with a
specific app name of "eclipse". Since versions are
reformated in 4 parts, it will report something like
"3.5.0.0" (only major+minor and 2 zero sub parts).
We don't send more details than that (e.g. Milestones).

Change-Id: Id01e3ed6b96ea4ce4e1b4f643d08a050291a6e7b
4 files changed