Revert "Merge branch 'staging'" due to glibc

The main output started to retain dependency on bootstrap-tools; see
https://github.com/NixOS/nixpkgs/pull/15867#issuecomment-227949096

This reverts commit c05d829598, reversing
changes made to f073df60d6.

pkgs/development/tools/analysis/rr/default.nix

@@ -11,9 +11,8 @@ stdenv.mkDerivation rec {
     sha256 = "03fl2wgbc1cilaw8hrhfqjsbpi05cid6k4cr3s2vmv5gx0dnrgy4";
   };
 
-  postPatch = ''
+  patchPhase = ''
     substituteInPlace src/Command.cc --replace '_BSD_SOURCE' '_DEFAULT_SOURCE'
-    sed '7i#include <math.h>' -i src/Scheduler.cc
     patchShebangs .
   '';
 

pkgs/development/tools/misc/hydra/default.nix

@@ -3,7 +3,7 @@
 , gitAndTools, mercurial, darcs, subversion, bazaar, openssl, bzip2, libxslt
 , guile, perl, postgresql92, aws-sdk-cpp, nukeReferences, git, boehmgc
 , docbook_xsl, openssh, gnused, coreutils, findutils, gzip, lzma, gnutar
-, rpm, dpkg, cdrkit, fetchpatch }:
+, rpm, dpkg, cdrkit }:
 
 with stdenv;
 
@@ -70,12 +70,6 @@ in releaseTools.nixBuild rec {
     sha256 = "0ngipzm2i2vz5ygfd70hh82d027snpl85r8ncn1rxlkak0g8fxsl";
   };
 
-  patches = [(fetchpatch {
-    name = "cmath.diff";
-    url = https://github.com/vcunat/hydra/commit/3c6fca1ba299.diff; # https://github.com/NixOS/hydra/pull/337
-    sha256 = "02m9q304ay45s7xfkm2y7lppakrkx3hrq39mm6348isnbqmbarc0";
-  })];
-
   buildInputs =
     [ makeWrapper autoconf automake libtool unzip nukeReferences pkgconfig sqlite libpqxx
       gitAndTools.topGit mercurial darcs subversion bazaar openssl bzip2 libxslt