add openssl to deps

Dependencies

• [2] R6O64PAE Use a nicer version string
• [3] 6NWLMLSS remove nix from buildinputs
• [4] V2ALOFRR Fix the test
• [5] M3A5PZIH hydra: Clarify the dependency on BDW-GC.
• [6] UHMUHQMU hydra: fix tarball build, add pre suffix to tarballs
• [7] WYM574OI add nix to buildinputs
• [*] T4LLYESZ * Nix expression for building Hydra.

Change contents

• replacement in release.nix at line 19
  [3.60]→[2.69:146](∅→∅)
  − [ perl libxslt dblatex tetex nukeReferences pkgconfig boehmgc git ];
  [3.60]

  [3.76]
  + [ perl libxslt dblatex tetex nukeReferences pkgconfig boehmgc git openssl];