Consolidate a few fields in RawFunction using bitfields.

Consolidate a few fields in RawFunction using bitfields.

Remove kAbstract from the list of function kinds.  It now has its own
dedicated bit.  This allows us to distinguish abstract methods from
abstract getters and setters.
Committed: https://code.google.com/p/dart/source/detail?r=10087

[turnidge, 2012-07-18 04:57:15]

Hi Ivan,

Here's the change we talked about earlier today which makes whether a function
is abstract orthogonal from Kind.

Todd

https://chromiumcodereview.appspot.com/10796004/diff/1/runtime/vm/object.h
File runtime/vm/object.h (right):

https://chromiumcodereview.appspot.com/10796004/diff/1/runtime/vm/object.h#ne...
runtime/vm/object.h:1369: if (is_static() || is_abstract()) {
What do you think of this?  I'm preserving the current behavior, but not sure if
it is useful.  I could drop the is_abstract() test here...

https://chromiumcodereview.appspot.com/10796004/diff/1/runtime/vm/raw_object_...
File runtime/vm/raw_object_snapshot.cc (right):

https://chromiumcodereview.appspot.com/10796004/diff/1/runtime/vm/raw_object_...
runtime/vm/raw_object_snapshot.cc:471: writer->WriteIntptrValue(GetKind());
Or... I could just write out kind_tag_ directly as an intptr_t.  Thoughts?

[Ivan Posva, 2012-07-18 22:56:38]

LGTM -ip