FFI: Simplified handling of custom ExternalAddress subclasses Merged branches for FFI return type #pointer and #handle. Send #initilize from C code and return from there rather than magically change local variable and then hadling this in Smalltalk code (this was bit tricky and hard to understand)

LIBRARY libbasic
DESCRIPTION     'Smalltalk/X Basic classes'
VERSION         3.5
CODE            EXECUTE READ 
DATA            READ WRITE
SECTIONS
    INITCODE    READ EXECUTE 
    INITDATA    READ WRITE 
EXPORTS 
    _libbasic_Init