fold in changes files for upcoming 0.2.4.4-alpha

ChangeLog

changes/6757

changes/6982

changes/addr_is_internal_debug

changes/bug1031

changes/bug6465

changes/bug6816

changes/bug7011

changes/bug7014

changes/bug7022

changes/bug7029

changes/bug7037

changes/bug7038

changes/bug7039

changes/bug7139

changes/cve-2012-2249

changes/dirserv-BUGGY-a

changes/dropped_openssl_vers

changes/src_ext

changes/ticket5749