Use FCL for app/homescreen, and get rid of simtsy and other components with no hope of building
NB. This was done by editing the system_model manually, because the runes for joining the package definitions seem broken at present.
source,dst,type,pattern,sysdef
http://developer.symbian.org/oss/MCL/sftools/fbf/utilities/,/utilities,branch,default,
//v800008/Builds01/mercurial_development/rnd/internal/epoc_additional/,/rnd/internal/epoc_additional,branch,RCL_1,
//v800008/Builds01/mercurial_development/sfl/FCL/sf/os/deviceplatformrelease/,/sf/os/deviceplatformrelease,branch,RCL_1,layers.sysdef.xml
//v800008/Builds01/mercurial_development/sfl/FCL/sf/os/kernelhwsrv/,/sf/os/kernelhwsrv,branch,RCL_1,layers.sysdef.xml
//v800008/Builds01/mercurial_development/sfl/FCL/sf/os/buildtools/,/sf/os/buildtools,branch,RCL_1,layers.sysdef.xml