Updated the xml files of the plug-ins to reflect the changes done
to the profile xmls in buteosyncfw. The service and the sync profile
xml files are merged into a single sync xml file.
To being with, change is done only to memotoo.xml. Once proper testing
for this is complete, change would be done to other profiles too
Modified the location of the buteo plugins directory to /usr/lib/buteo-plugins

Signed-off-by: Sateesh Kavuri <sateesh@mobilitas.co>