Use correct Qt logging functions with Qt4

:Release Notes:
For Qt4, use the older log handler subsystem: qInstallMsgHandler
Fix a bug when build without PMLOG activated.
Change location of files on desktop from /tmp to /tmp/webos
Add additional logging to ImageServices.cpp.

:Detailed Notes:

:Testing Performed:
Built with PMLOG activated and deactivated.  Verified log locations.

:QA Notes:

:Issues Addressed:

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

Change-Id: I5c1bb9afa72d7a5d0e66e6814ffbed2723a6727c
Reviewed-on: https://g2g.palm.com/3386
Reviewed-by: Build Verification
Tested-by: Roger Stringer <roger.stringer@lge.com>
Reviewed-by: Eric Blade <eric.blade@lge.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>