IntrusiveForwardList: explicitly make it move-constructible
IntrusiveForwardList: explicitly make it move-constructible

Declare default move constructor, delete copy constructor, copy
assignment and move assignment.
DISTORTEC/distortos,DISTORTEC/distortos,DISTORTEC/distortos,jasmin-j/distortos,CezaryGapinski/distortos,jasmin-j/distortos,jasmin-j/distortos,jasmin-j/distortos,CezaryGapinski/distortos,CezaryGapinski/distortos,DISTORTEC/distortos,CezaryGapinski/distortos,jasmin-j/distortos,CezaryGapinski/distortos