Export the symbol 'sys_setgroups' to fix the following problem:
WARNING: /lib/modules/2.6.2-rc2-mm2/kernel/fs/nfsd/nfsd.ko needs unknown symbol sys_setgroups
--- linux-2.6.2-rc2-mm2/kernel/sys.c~	2004-01-30 14:16:19.517353144 +0100
+++ linux-2.6.2-rc2-mm2/kernel/sys.c	2004-01-30 14:58:55.171834608 +0100
@@ -1312,6 +1312,8 @@ asmlinkage long sys_setgroups(int gidset
 	return retval;
 }
 
+EXPORT_SYMBOL(sys_setgroups);
+
 /*
  * Check whether we're fsgid/egid or in the supplemental group..
  */