RemoteLinux: Expose some currently internal classes.

This is needed in the short term to reverse the direction of
the dependency between this plugin and the analyzer.
It is expected that there'll be more users in the future.

Change-Id: I9603e8dfa70e442394ba5e8671c6353b65c46374
Reviewed-on: http://codereview.qt.nokia.com/266


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>