e/bluez4: cleanup and fixes

e/bluez4: cleanup and fixes

 - Change module name in whitelist. Its name is bluez4 since it only
   supports bluez 4 API. The day it (automatically) also supports bluez 5,
   we rename it back.
 - Use eina_stringshare_replace when possible
 - Change huge if (strcmp(icon, "...") return "....." with a table.
 - Don't use stringshare when not needed. There's no reason to
   stringshare the icon, just use the static const ones
 - Sanitize edbus method table
 - Remove bogus NONE entry after NULL in services table
 - Fix coding style
 - Generalize _unset_dev() to work with any list

SVN revision: 82208