ccn-lite: use always ccnl_malloc
native: add accept syscall declaration
native: shutdown -> native_shutdown
native: add more syscall declarations
FIXUP: remove erroneous comment
Merge pull request #2002 from OlegHahm/ccnl_malloc_all_over

ccn-lite: use always ccnl_malloc
Merge pull request #2015 from LudwigOrtmann/native_real-accept

native: add missing syscall declarations
native: add fileno wrapper
native: disable interrupts for reboot
native: add "fildes" module (WIP)