Merge branch 'refs/heads/t/openssl-1.1'

In openssl-1.1 several structures have been made opaque, breaking both
the stream cipher and the public key functions in crypt.c. This series
deals with these issues, trying to minimize the ifdeffery.

* refs/heads/t/openssl-1.1 (cooking for three months):
  openssl: RSA fixes for openssl-1.1.
  openssl: Use EVP API for AES.

diff --cc NEWS.md
index 37d855b9cb22edeff12b0a9bc09f23dda39ef608,71eb6cb26d3a333f8840f78848ad74986f689754..cad0169bfd4a5f5d2ff38cdd145e30414719e42c
--- 1/NEWS.md
--- 2/NEWS.md
+++ b/NEWS.md
@@@ -1,19 -1,6 +1,20 @@@
  NEWS
  ====
  
 +------------------------------------------
 +0.5.7 (to be announced) "semantic density"
 +------------------------------------------
 +- Speedup of the base64 decoder.
 +- One of the two source browsers has been removed from the web pages.
 +  The doxygen API reference still contains an HTML version of each
 +  source file.
 +- Two race conditions in para_server have been fixed.
 +- ls -p is now deprecated in favor of -F or -b. See the help text of
 +  the ls command for details.
++- The openssl code has been adjusted to work also with openssl-1.1.
 +
 +Download: [tarball](./releases/paraslash-git.tar.bz2)
 +
  ---------------------------------------
  0.5.6 (2016-07-10) "cascading gradient"
  ---------------------------------------

diff --cc configure.ac
Simple merge

diff --cc crypt.c
Simple merge