Site config.php file updates.
Add $page->numChildren(false|true) function and $page->numVisibleChildren property. The $page->numChildren() function is the same as the existing $page->numChildren propery, unless you pass 'true' to it, in which case it returns only the quantity of visible children. The new property $page->numVisibleChildren is the same as $page->numChildren(true);
Update the blowfish detection in Password.php to exclude blowfish from PHP versions before 5.3 (even if support found) as well as be more specific with the blowfish prefixes that are recognized.
Add a default precision value for FieldtypeFloat
Add support for alternate image alignment classnames in ProcessPageEditImageSelect.module
Update Upload.php to throw exception as last resort if upload directory isn't writable.