cookies: reject incoming cookies set for TLDs

Test 61 was modified to verify this.

CVE-2014-3620

Reported-by: Tim Ruehsen
URL: http://curl.haxx.se/docs/adv_20140910B.html

tests/data/test61

@@ -23,6 +23,7 @@ Set-Cookie: test3=maybe; domain=foo.com; path=/moo; secure
 Set-Cookie: test4=no; domain=nope.foo.com; path=/moo; secure
 Set-Cookie: test5=name; domain=anything.com; path=/ ; secure
 Set-Cookie: fake=fooledyou; domain=..com; path=/;
+Set-Cookie: supercookie=fooledyou; domain=.com; path=/;^M
 Content-Length: 4
 
 boo