fix findutils wrapper:

- add symlinks to find and xargs
- set LOCATE_PATH for locate

svn path=/nixpkgs/trunk/; revision=4544

pkgs/tools/misc/findutils-wrapper/builder.sh

@@ -2,7 +2,11 @@ source $stdenv/setup
 source $makeWrapper
 
 makeWrapper "$findutils/bin/locate" "$out/bin/locate" \
---database=/var/locatedb
+--set LOCATE_PATH /var/locatedb
 
 makeWrapper "$findutils/bin/updatedb" "$out/bin/updatedb" \
 --set LOCATE_DB /var/locatedb
+
+makeWrapper "$findutils/bin/find" "$out/bin/find"
+
+makeWrapper "$findutils/bin/xargs" "$out/bin/xargs"