package/libopenssl: add option to enable some features

package/libopenssl: add option to enable some features

Openssl implements lot of algorithms that are not required in some
emdedded devices and cyphers known as weak. Secure embedded systems
shall disable unused algorithms (and weak algo) in order to be
certified.

This patch allows to select weak algorithms and mecanims to enable
such as md5.

To ensure backward compatibility, all items are selected by default.

Signed-off-by: Erwan GAUTRON <erwan.gautron@bertin.fr>
[yann.morin.1998@free.fr:
  - drop help texts that just repeat the prompts
  - fix check-package
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>