Support HYBRIS_LD_LIBRARY_PATH in bionic linker

Change-Id: I070fee43538ce73fa25b92df9f814d1b2e6cb78e
Signed-off-by: David Greaves <david.greaves@jollamobile.com>
Add the Mer PATH /usr/libexec/droid-hybris/system/lib to bionic by default.

Change-Id: Iaa616ebfd54be8e423d981c53a3b700ebd90be09
Signed-off-by: David Greaves <david.greaves@jollamobile.com>