openafs: Fix configure option; Add tools

--with-gssapi is usually not used anymore and is replaced by --with-krb5

Add tools that handle volume dumps; search, list and extract files from
them.

pkgs/servers/openafs/1.8/default.nix

@@ -77,7 +77,7 @@ stdenv.mkDerivation {
 
 
     configureFlagsArray=(
-      "--with-gssapi"
+      "--with-krb5"
       "--sysconfdir=/etc"
       "--localstatedir=/var"
       "--disable-kernel-module"
@@ -108,6 +108,8 @@ stdenv.mkDerivation {
       cp "doc/xml/''${d}"/*.html "$doc/share/doc/openafs/''${d}"
     done
 
+    cp src/tools/dumpscan/{afsdump_dirlist,afsdump_extract,afsdump_scan,dumptool} $out/bin
+
     rm -r $out/lib/openafs
   '' + optionalString withDevdoc ''
     mkdir -p $devdoc/share/devhelp/openafs/doxygen