By adding versioning we have a handle on ABI breaking changes in
the protocol or system wide data structures. As of this commit the
protocol version is 0 in order to be compatible with File Servers
that are not yet aware of versioning.
Change-Id: I8f4eca49b506f0c03383c25593e0c44bddac3d66
This Shared Folders File System library (libsffs) now contains all the
file system logic originally in HGFS. The actual HGFS server code is
now a stub that passes on all the work to libsffs. The libhgfs library
is changed accordingly.