[style] use VPSCONFDIR from Makefile defines

We always had that VPSCONFDIR variable defined in paths.am
and propagated through pathsubst.am. Nevertheless, we were
defining it again (as VPS_CONF_DIR) in include/types.h

Let's eliminate that duplication, propagating VPSCONFDIR
to C code by means of CFLAGS in Makefiles, like we do with others.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
11 files changed