- store absolute URLs in the db, not base URL/path combination URLs
	- support for multiple hosts with the same built-in icon

        * Misc.subproj/WebIconDatabase.m:
        (-[WebIconDatabase init]): renamed some dictionaries
        (-[WebIconDatabase iconForSiteURL:withSize:]): call _builtInIconsForHost
        (-[WebIconDatabase _updateFileDatabase]): check for nil
        (-[WebIconDatabase _hasIconForSiteURL:]): call _pathForBuiltInIconForHost
        (-[WebIconDatabase _pathForBuiltInIconForHost:]): new
        (-[WebIconDatabase _builtInIconsForHost:]): call _pathForBuiltInIconForHost
        * Misc.subproj/WebIconDatabasePrivate.h:
        * WebView.subproj/WebDataSourcePrivate.m:
        (-[WebDataSource _loadIcon]): use absolute URL


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@1964 268f45cc-cd09-0410-ab3c-d52691b4dbfc