In bug 518351 it's planned to remove update.configurator but pde.core
still uses it to consult old installations (pre 3.4). It's useless
feature which should be gone now to ease maintenance.
All places consulting the old update manager are gone.
One method in TargetPlatform deprecated as it was solely for the old
update manager.
Bumped pde.core minor version to make this change obvious.

Change-Id: I5ef186d75fadfda7819949764321ea3bf450630c
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>