Enable diskfree on kfreebsd, using statvfs.

Could not reproduce the build failure I had seen related to this,
but the numbers were wrong with statfs64. Probably pulling from the wrong
place in the structure. statvfs seems to work..

Utility/libdiskfree.c

@@ -22,16 +22,9 @@
 # define STATCALL statfs /* statfs64 not yet tested on a real FreeBSD machine */
 # define STATSTRUCT statfs
 #else
-#if defined (__FreeBSD_kernel__) /* Debian kFreeBSD */
-# include <sys/param.h>
-# include <sys/mount.h>
-# define STATCALL statfs64
-# define STATSTRUCT statfs
-# warning free space checking code temporarily disabled due to build failure
-# define UNKNOWN
-#else
-#if defined (__linux__)
-/* This is a POSIX standard, so might also work elsewhere. */
+#if defined (__linux__) || defined (__FreeBSD_kernel__)
+/* Linux or Debian kFreeBSD */
+/* This is a POSIX standard, so might also work elsewhere too. */
 # include <sys/statvfs.h>
 # define STATCALL statvfs
 # define STATSTRUCT statvfs
@@ -41,7 +34,6 @@
 #endif
 #endif
 #endif
-#endif
 
 #include <errno.h>
 #include <stdio.h>

debian/changelog

@@ -3,6 +3,7 @@ git-annex (3.20120616) UNRELEASED; urgency=low
   * watch: New subcommand, which uses inotify to watch for changes to
     files and automatically annexes new files, etc, so you don't need
     to manually run git commands when manipulating files.
+  * Enable diskfree on kfreebsd, using statvfs.
 
  -- Joey Hess <joeyh@debian.org>  Tue, 12 Jun 2012 11:35:59 -0400