Another fix for build without package locks
Move FIND-FDEFINITION to where it properly belongs

Also removed unused function FDEFINITION-OBJECT
Rename size_small_boxed to size_tiny_boxed (respectively "trans_")

This change connotes that it is not merely the opposite of "large"
thus implying applicablity to anything not on a large object page.
Fix chill without package locks
Rename SYMBOL-FDEFINITION to SYMBOL-FDEFN and similarly INFO-VECTOR-

This is to avoid a false connotation that SYMBOL-FDEFINITION is just
FDEFINITION but restricted to symbols (which would be SYMBOL-FUNCTION)
Fix describe of a package without sb-package-locks