Fixes:

cow01.c: In function 'parent_check':
../lib/zdtmtst.h:120:11: error: format '%lx' expects argument of type 'long unsigned int', but argument 7 has type 'uint64_t {aka long long unsigned int}' [-Werror=format=]
  test_msg("FAIL: %s:%d: " format " (errno = %d (%s))\n", \
           ^
cow01.c:287:5: note: in expansion of macro 'fail'
     fail("%s[%#x]: %p is not COW-ed (pagemap of "
     ^~~~
In file included from inotify_system.c:14:0:
inotify_system.c: In function 'read_set':
../lib/zdtmtst.h:117:11: error: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'unsigned int' [-Werror=form
at=]
  test_msg("ERR: %s:%d: " format " (errno = %d (%s))\n", \
           ^
inotify_system.c:299:3: note: in expansion of macro 'pr_perror'
   pr_perror("read(%d, buf, %lu) Failed, errno=%d",
   ^~~~~~~~~
deleted_dev.c:53:36: error: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type '__dev_t {aka long long unsigned
 int}' [-Werror=format=]
   test_msg("mode %x want %x, dev %lx want %lx\n",
                                    ^
deleted_dev.c:53:45: error: format '%lx' expects argument of type 'long unsigned int', but argument 5 has type 'dev_t {aka long long unsigned i
nt}' [-Werror=format=]
   test_msg("mode %x want %x, dev %lx want %lx\n",
                                             ^
../lib/zdtmtst.h:117:11: error: format '%lx' expects argument of type 'long unsigned int', but argument 5 has type 'off64_t {aka long long int
' [-Werror=format=]
  test_msg("ERR: %s:%d: " format " (errno = %d (%s))\n", \
           ^

Nothing really interesting, but printings with right format specifier.
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>