[Sheepdog] [PATCH] sheep: configure should check if libattr exists

[Christoph Hellwig]

On Thu, Dec 29, 2011 at 03:58:04PM +0100, dongsu.park at profitbricks.com wrote:
> From: Dongsu Park <dongsu.park at profitbricks.com>
> 
> configure should check if libattr.so exists under system lib dir,
> as well as if its header file attr/xattr.h exists under /usr/include.
> Without these checks, you could meet compile error when the devel
> package for libattr does not exist, although you don't meet any error
> in configure phase.

The right fix is to replace the attr/xattr.h include with sys/xattr.h,
which is provided by glibc.