criu/makefile: fix build (DEFINES array to CFLAGS)

I have CONFIG_HAS_LIBBSD, but -DCONFIG_HAS_LIBBSD isn't passed to
compiler. Fix for the following error:
<...>
  CC       cr-dedup.o
  CC       cr-dump.o
cr-dump.c: In function ‘dump_filemap’:
cr-dump.c:382:3: error: implicit declaration of function ‘strlcpy’ [-Werror=implicit-function-declaration]
   strlcpy(aufs_link.name, vma_area->aufs_rpath,
   ^
cc1: all warnings being treated as errors
/home/japdoll/tools/criu/scripts/nmk/scripts/rules.mk:53: recipe for target 'cr-dump.o' failed
make[2]: *** [cr-dump.o] Error 1
Makefile:146: recipe for target 'built-in.o' failed
make[1]: *** [built-in.o] Error 2
Makefile:109: recipe for target 'criu' failed
make: *** [criu] Error 2
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/Makefile.crtools

 ccflags-y		+= -iquote $(ARCH)
+ccflags-y		+= $(DEFINES)
 obj-y			+= action-scripts.o
 obj-y			+= aio.o
 obj-y			+= bfd.o