Follow devstat API change on 5-CURRENT.

svn path=/head/; revision=77201

sysutils/gkrellm/files/patch-src::disk.c

@@ -1,7 +1,7 @@
 Index: src/disk.c
 diff -u src/disk.c.orig src/disk.c
 --- src/disk.c.orig	Mon Jul  1 11:19:47 2002
-+++ src/disk.c	Thu Feb 20 19:42:04 2003
++++ src/disk.c	Sat Mar 22 20:03:22 2003
 @@ -70,7 +70,11 @@
  
  #if defined(__FreeBSD__)
@@ -14,3 +14,18 @@ diff -u src/disk.c.orig src/disk.c
  #if __FreeBSD_version >= 300000
  #include <devstat.h>
  static struct statinfo	statinfo_cur;
+@@ -161,6 +165,14 @@
+ 	using_DiskN_names = TRUE;
+ 	}
+ #else
++#if __FreeBSD_version >= 500107
++#define getdevs(stats)	devstat_getdevs(NULL, stats)
++#define getnumdevs()	devstat_getnumdevs(NULL)
++#define selectdevs	devstat_selectdevs
++#define bytes_read	bytes[DEVSTAT_READ]
++#define bytes_written	bytes[DEVSTAT_WRITE]
++#endif
++
+ static void
+ read_freebsd_disk()
+ 	{