Treat URL schemes as case insensitive when sanitizing them in esc_url().

props mdawaffe.
fixes #23187.
tests: [1184/tests]



git-svn-id: http://core.svn.wordpress.org/trunk@23303 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Consistently use $wp_rewrite->index instead of hardcoding "index.php".

props wonderboymusic. fixes #7337

git-svn-id: http://core.svn.wordpress.org/trunk@23305 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update the copyright notice to 2013. Yes — WordPress turns *10* this year.

props kraftbj. fixes #22987

git-svn-id: http://core.svn.wordpress.org/trunk@23306 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Properly wipe capabilities from new site-independent multisite users by using the right key.

props wonderboymusic. fixes #15627

git-svn-id: http://core.svn.wordpress.org/trunk@23307 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Whitespace cleanup.

Props dimadin
fixes #23126


git-svn-id: http://core.svn.wordpress.org/trunk@23308 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Declare wp_rewrite as global in _wp_menu_item_classes_by_context().

Props andrewryno
fixes #7337


git-svn-id: http://core.svn.wordpress.org/trunk@23309 1a063a9b-81f0-0310-95a4-ce76da25c4cd