USE_GCC2 or USE_GCC3 where appropriate.
the functionality of the old gcc.buildlink2.mk has been rolled into
compiler.mk now, which is automatically used.
more changes to come later...
Based on the sfs-0.6 package provided by Michael Santos in PR 18528.
SFS is a secure, global network file system with completely
decentralized control. SFS lets you access your files from anywhere
and share them with anyone, anywhere. Anyone can set up an SFS
server, and any user can access any server from any client. SFS
lets you share files across administrative realms without involving
administrators or certification authorities.