compel handle-elf.c: better align generated output

This is purely cosmetical, no functional change.

1. Make sure relocs table is well aligned.

2. printf("%#02x", 1) prints 0x01, but for 0 it prints 0,
   not 0x00 as one would expect, so output is somewhat ugly.
   Use "0x%02x" format instead to make it more uniform and
   well aligned.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>