New upstream release 5.2.0

- The Attestation IMC/IMV pair supports the IMA-NG
  measurement format
- Aikgen tool to generate an Attestation Identity Key bound
  to a TPM
- Swanctl tool to provide a portable, complete IKE
  configuration and control interface for the command
  line using vici interface with libvici library
- PT-EAP transport protocol (RFC 7171) for TNC
- Enabled support for acert for checking X509 attribute certificate
- Updated patches, removed selinux patch as upstream has fixed it
  in this release.
- Updated spec file with minor cleanups

.gitignore

@@ -15,3 +15,6 @@
 /strongswan-5.2.0dr4.tar.bz2.sig
 /strongswan-5.2.0dr5.tar.bz2
 /strongswan-5.2.0dr6.tar.bz2
+/strongswan-5.2.0.tar.bz2
+/strongswan-5.2.0.tar.bz2.md5
+/strongswan-5.2.0.tar.bz2.sig