Fix addl build issue with gcc-4.8.1

:Release Notes:
Add c++11 condition to MojDbSharedEngine.h for boost

:Detailed Notes:
Replaced auto_ptr usage on boost::scoped_ptr if compiled with option "-std=c++11".

:Testing Performed:
Only build tested

:QA Notes:

:Issues Addressed:

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I7a6e0ff57071a3f823c6d665c614824c457e109a
Reviewed-on: https://g2g.palm.com/3263
Reviewed-by: Roger Stringer <roger.stringer@lge.com>
Tested-by: Roger Stringer <roger.stringer@lge.com>