Added missing listobject.h file
Added missing listobject.h file

darcs-hash:20080909012402-a5408-53cac5ca15f64c71e0a0e8dab5d0aa7ee52cc3ce.gz

DanielStutzbach/blist,DanielStutzbach/blist,pfmoore/blist,pfmoore/blist