make, soccr: let CRIU depend on libsoccr

As -lsoccr now is in $(LIBS) in Makefile.packages, it should be
build before criu objects. Otherwise, we try to compile
feature-tests with $(LIBS) and the succesful features fails with:
  <stdin>:1:25: warning: extra tokens at end of #include directive
  /usr/bin/ld: cannot find -lsoccr
  collect2: error: ld returned 1 exit status
Which lead to later problems:
  criu/sk-tcp.c:50:8: error: redefinition of 'struct tcp_repair_opt'
   struct tcp_repair_opt {
          ^
  In file included from criu/sk-tcp.c:1:0:
  /usr/include/netinet/tcp.h:259:8: note: originally defined here
   struct tcp_repair_opt
Because of fails in really-sucessful feture-tests.

P.S.
Maybe we should unbound feature-tests compilation from $(LIBS),
specified in Makefile.packages - that looks right after all.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>