[IMPROVE] Preload: split loading and probe execution

[IMPROVE] Preload: split loading and probe execution

Previously both loading binary in target process memory and
an execution of handlers from the SWAP library were implemented
as a one instance.
Now they are splitted, cause some features requires loading
custom binaries into a process memory, but doesn't need SWAP
library handlers execution functionality.

Change-Id: I8408f1e2a144267bb2d4b0f33706b08558ffbd26
Signed-off-by: Alexander Aksenov <a.aksenov@samsung.com>