gravatar 6.x-1.6

Changes since DRUPAL-6--1-5:

• Misspelled permission in comment form.
• Don't babysit default user pictures that exceed the user picture dimensions (commented-out for now, to be removed still).
• Stop sending hard-coded size parameters to theme('image', ...).
• Array-itize _gravatar_get_gravatar()'s parameters.
• Remove the 'None' options for maturity filter rating. Gravatar service uses a default of 'G' anyway, so there's no harm including a default '&r=G' with the gravatar image URL.
• Fix the global default user picture absolute url problem with URL. It shouldn't write a language prefix with this fix.
• Major revision and simplification to gravatar_preprocess_user_picture().
• Rename 'can disable own gravatar' to 'disable own gravatar'
• Removed the 'gravatar check' from the admin settings. It's not needed or useful. There already is a gravatar check link in user account pages.
• Removed closing function docs to comply with core coding standards.
• Add another default picture option - transparent module default avatar.
• Temporary fix for http://drupal.org/node/334826 until it is fixed in core.
• Enforce maximum size of 250 in _gravatar_get_size().
• Convert absolute urls to use the global $base_url instead of $GLOBALS['base_url'] or url() in _gravatar_get_default_image().
• Add missing documentation.
• Remove access checks for links in gravatar_requirements.
• Use getimagesize() instead of image_get_info() for getting the dimensions of the global default image since getimagesize() will work for absolute urls.
• Removed gravatar_size parameter. Now just using the user_picture_dimensions variable.
• Removed calls to deleted variable gravatar_toggle.
• Minor CSS/JavaScript tweak.
• Admin options and strings tweak.
• Max picture size is actually 512 pixels.
• Minor logical revision to hook_form_user_profile_form_alter().
• #352500 by Psicomante: Fixed undefined gravatar_variables() in uninstall.
• Small change in JavaScript.
• by Dave Reid: Added #process for default picture radios instead of manually creating radio elements. Misc fixes and cleanups.
• by Dave Reid: Updated for getInfo() in tests.
• #445428 by Narno: Fixed use of $notifications instead of $notificaitons[].