Changes

dsme-wdd-wd.c: Fix GCC string truncation error.

This fixes issue #297 on the Maemo Leste bugtracker.

Compiling with GCC 8.3.0 gives the following error:
dsme-wdd-wd.c:236:38: error: 'snprintf' output may be truncated before the last format character [-Werror=format-truncation=]
                      "/dev/watchdog%d", i);
                                      ^
dsme-wdd-wd.c:235:13: note: 'snprintf' output between 15 and 16 bytes into a destination of size 15
             snprintf(watchdog_path, sizeof(watchdog_path),
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                      "/dev/watchdog%d", i);
                      ~~~~~~~~~~~~~~~~~~~~~

Some fiddling around seems to confirm this is a false positive.

We have fixed this however by changing the array size to 32 instead of
disabling the check in question.

debian/changelog: Bump for version 0.61.5.

dsme-wdd-wd.c: set watchdog_path size to 16 bytes

According to my research 16 bytes is enough to both suppress gcc warning
and to be able to safely store up to 99 watchdogs

Add cross-compiling support

Move dsme-thermal logic from init script to libexec

This is needed because we can't use parts of bash scripts in systemd
service files

[systemd] Use systemctl commands for shutdown/reboot

Add systemd support

Update debian/changelog (0.61.6)