Add content_harvester_plugin_api component to homescreensrvlegacy
NB. SOmeone did something odd in order to avoid creating a new .pro file
source,dst,type,pattern,sysdef
http://developer.symbian.org/oss/FCL/sf/os/mm/,/sf/os/mm,branch,CompilerCompatibility,layers.sysdef.xml
http://developer.symbian.org/oss/FCL/sf/mw/mmmw/,/sf/mw/mmmw,branch,CompilerCompatibility,layers.sysdef.xml