fuse-7z-ng: fix build against modern glibc

Wthout the change configure fails as:

    checking for pthread_yield in -lpthread... no
    configure: error: pthread library not found.

fuze-7z-ng does not use pthread itself. Let's just drop the check.

pkgs/tools/filesystems/fuse-7z-ng/default.nix

@@ -10,6 +10,11 @@ stdenv.mkDerivation rec {
     rev = "eb5efb1f304c2b7bc2e0389ba06c9bf2ac4b932c";
     sha256 = "17v1gcmg5q661b047zxjar735i4d3508dimw1x3z1pk4d1zjhp3x";
   };
+  patches = [
+    # Drop unused pthread library. pthread_yield()
+    # fails the configure.
+    ./no-pthread.patch
+  ];
 
   nativeBuildInputs = [ pkg-config makeWrapper autoconf automake ];
   buildInputs = [ fuse ];

pkgs/tools/filesystems/fuse-7z-ng/no-pthread.patch

@@ -0,0 +1,11 @@
+pthread_yield() is not used by fuse-7z-ng, fails configure.
+--- a/configure.ac
++++ b/configure.ac
+@@ -25,7 +25,6 @@ AC_CHECK_HEADERS([fcntl.h stddef.h string.h unistd.h dlfcn.h dirent.h])
+ AC_CHECK_FUNCS([memset memmove])
+ AC_CHECK_FUNCS([sqrt])
+ 
+-AC_CHECK_LIB([pthread], [pthread_yield],,AC_MSG_ERROR([pthread library not found.]))
+ AC_CHECK_LIB([dl], [dlclose])
+ 
+ PKG_CHECK_MODULES([fuse], [fuse >= 2.8])