[CRIU] [PATCH] Doc/Makefile: error out if req tools absent

[Cyrill Gorcunov]

On Sun, Jan 19, 2014 at 12:31:28PM -0800, Kir Kolyshkin wrote:
> Make sure we have a clear message why build it failing, as there are
> repeated questions at criu@ mailing list.
> 
> Before this patch:
> 
> 	[kir at kirpad Documentation]$ make
> 	  GEN      criu.8
> 	make: *** [criu.8] Error 127
> 
> After:
> 
> 	[kir at kirpad Documentation]$ make
> 	/bin/sh: line 1: xmltos: command not found
> 	make: *** [check] Error 1
> 
> Signed-off-by: Kir Kolyshkin <kir at openvz.org>

Acked-by: Cyrill Gorcunov <gorcunov at openvz.org>

Thanks Kir!