Keep the top of a sized-to-fit control the same when localizing. Fixes the egregious...

Keep the top of a sized-to-fit control the same when localizing. Fixes the egregious part of #8608; the minor part will be ignored for now because it is can't be fixed without significant impact on other languages at present (the nib really needs to just be made localizable rather than using strings-based localization, which can't be done while we're in string freeze for 1.2).  Fixes #8608

git-svn-id: svn://svn.adiumx.com/adium/trunk@21966 1c916fce-81e2-0310-a464-8ca513f45935