Fix build against older OpenSSL libs
Merge branch 'PHP-5.6'

* PHP-5.6:
  fix linkage
  More openssl UPGRADING updates
  Fix build against older OpenSSL libs
  Update NEWS/UPGRADING with openssl additions
Merge remote-tracking branch 'origin/master' into str_size_and_int64

* origin/master:
  Fix build against older OpenSSL libs

Conflicts:
	UPGRADING