One further note: on projects as big as Wine patching the ChangeLog is not practical as it would result in a lot of conflicts. Therefore, Alexandre Julliard automatically generates ChangeLog entries from CVS just before each release.
Oh, I only did it cause its requested on http://www.winehq.com/site/sending_patches:
"When submitting patches, please: Include a ChangeLog entry with your name, email address and a description of what your patch does."
ChangeLog entry != ChangeLog patch :)
Cheers, Kuba