rhbz#981429: New upstream release

- Fixes CVE-2013-5018: rhbz#991216, rhbz#991215
- Fixes rhbz#991859 failed to build in rawhide
- Updated local patches and removed which are not needed
- Fixed errors around charon-nm
- Added plugins libstrongswan-pkcs12.so, libstrongswan-rc2.so,
  libstrongswan-sshkey.so
- Added utility imv_policy_manager

.gitignore

@@ -4,3 +4,4 @@
 /strongswan-5.0.2.tar.bz2
 /strongswan-5.0.3.tar.bz2
 /strongswan-5.0.4.tar.bz2
+/strongswan-5.1.0.tar.bz2