* Revert both r30278 (cmake upgrade) and r30307 (zlib fix to get cmake

to build).  These are more appropriate to the stdenv branch.  I'll
  apply them there.

svn path=/nixpkgs/trunk/; revision=30308

pkgs/development/libraries/zlib/default.nix

@@ -8,8 +8,6 @@ stdenv.mkDerivation (rec {
     sha256 = "0n7rlgvjn73pyil3s1l6p77m7wkc809n934rnzxv1b1za4pfar30";
   };
 
-  patches = [ ./zlib-LARGEFILE64_SOURCE.patch ];
-
   configureFlags = if static then "" else "--shared";
 
   preConfigure = ''

pkgs/development/libraries/zlib/zlib-LARGEFILE64_SOURCE.patch

@@ -1,14 +0,0 @@
-	Fix compilation with _LARGEFILE64_SOURCE
-
-diff -ur zlib-1.2.5.orig/zlib.h zlib-1.2.5/zlib.h
---- zlib-1.2.5.orig/zlib.h	2010-04-20 06:12:48.000000000 +0200
-+++ zlib-1.2.5/zlib.h	2010-09-27 21:20:27.398694997 +0200
-@@ -1578,7 +1578,7 @@
- #  define gzoffset gzoffset64
- #  define adler32_combine adler32_combine64
- #  define crc32_combine crc32_combine64
--#  ifdef _LARGEFILE64_SOURCE
-+#  ifndef _LARGEFILE64_SOURCE
-      ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
-      ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
-      ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));

pkgs/development/tools/build-managers/cmake/default.nix

@@ -7,7 +7,7 @@ with stdenv.lib;
 let
   os = stdenv.lib.optionalString;
   majorVersion = "2.8";
-  minorVersion = "6";
+  minorVersion = "4";
   version = "${majorVersion}.${minorVersion}";
 in
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "${meta.homepage}files/v${majorVersion}/cmake-${version}.tar.gz";
-    sha256 = "13kjfpgsrsygz693bzaf2pf9avzr1r56r6znn3zqaz9nmj0rp6g6";
+    sha256 = "1k2kjaj3vfifb329ff7fr4hcbpbaqb66l97pshq70h7m0zwajznr";
   };
 
   patches =