remove_filter should return (bool) something acually removed

[mdawaffe]

Sometimes it's nice for plugins to be able to conditionally do something depending on whether or not the hook used to have that filter attatched to it.

For example, add the removed filter back to the hook at a different priority.

Marking as 2.2. Feel free to push it back.

[rob1n]

I like the idea. And it's not necessarily life-threatening, so I'm pushing it to 2.3. If someone else thinks it should go into 2.2, please raise it.

[rob1n]

(In [5393]) Return based on whether the hook was removed or not. Props mdawaffe. fixes #4223

Note that this will almost definitely *not* affect existing implementations. The way most code is set up now is to just call remove_filter() or remove_action().

[giovannimcosta]

Ops, I forgot something....
BLOGROLL didn't imported, no "links" from my blogroll were imported =/

[giovannimcosta]

forget ! and please, forgive me I posted in wrong place, my browser colapsed and make this. sorry ok