webos-image: smartkey-hun=6

:Release Notes:
Update smartkey-hun recipe file to match facilities added to submissions/6.
Replaces broken version of recipe and uses latest version of smartkey.
Implement on-the-fly modification of PRO file to fix a Qt4-related issue.

:Testing performed
smartkey-hun=6 already thoroughly tested

:QA Notes:

:Issues addressed:
[ES-118] Evaluate possibility to build everything available in verification jobs

Open-webOS-DCO-1.0-Signed-off-by: Roger Stringer <roger.stringer@lge.com>

Change-Id: Ia29cca7c7017a14d76e04a2840b83ff692ed87ac
Reviewed-on: https://g2g.palm.com/2826
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>