Symlinking /home and /tmp with bsdinstaller to save space

[Matthew Dillon]

    Well, MFS will probably be faster but only because the buffer cache
    is limited and write_behind clustering is the default, and only if you
    have enough free memory to hold everything.  Even so it usually 
    isn't a good idea to try to use MFS to speed things up because you 
    wind up double-caching the data.  i.e. the data is in MFS's memory
    and it is also separately cached by the VM system.  It's usually a
    big waste of memory.

						-Matt