tvheadend: -mno-unaligned-access fails on x86
tvheadend: simplify tv_grab_file
nano: re-enable -w
libtool: update to libtool-2.4.4

Signed-off-by: Stephan Raue <stephan@openelec.tv>
kodi: update to kodi-14-ecd5425
kodi.service: remove KillMode=process

not needed anymore. also KillMode=process wont work well if we
start kodi via wrapper script (to dump crashlogs for example)
buusybox: set kernel.core_pattern
kodi: run via wrapper. dump a crashlog on SEGV whenever possible