openswan: security bump to version 2.6.50.1
- Fixes CVE-2018-15836 (a Bleichenbacher-style signature forgery which
involves RSA padding attack)
- Add hash for license files
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>