The run directory has been moved from /var/run to /run in systemd,
which results in the following warning at boot:
```
/usr/lib/systemd/system/mbpfan.service:10: PIDFile= references a path below legacy directory /var/run/, updating /var/run/mbpfan.pid → /run/mbpfan.pid; please update the unit file accordingly.
```
Additionally, the service occasionally fails to start if the service
is started before coretemp devices have finished probing, which results
in the following error. This patch fixes this issue.
```
systemd[1]: Started A fan manager daemon for MacBook Pro.
mbpfan[350]: /usr/sbin/mbpfan needs coretemp support. Please either load it or build it into the kernel. Exiting.
systemd[1]: mbpfan.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: mbpfan.service: Scheduled restart job, restart counter is at 1.
systemd[1]: Stopped A fan manager daemon for MacBook Pro.
systemd[1]: Started A fan manager daemon for MacBook Pro.
mbpfan[369]: /usr/sbin/mbpfan needs coretemp support. Please either load it or build it into the kernel. Exiting.
systemd[1]: mbpfan.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: mbpfan.service: Scheduled restart job, restart counter is at 2.
systemd[1]: Stopped A fan manager daemon for MacBook Pro.
mbpfan[380]: /usr/sbin/mbpfan needs coretemp support. Please either load it or build it into the kernel. Exiting.
systemd[1]: Started A fan manager daemon for MacBook Pro.
systemd[1]: mbpfan.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: mbpfan.service: Scheduled restart job, restart counter is at 3.
mbpfan[393]: /usr/sbin/mbpfan needs coretemp support. Please either load it or build it into the kernel. Exiting.
systemd[1]: Stopped A fan manager daemon for MacBook Pro.
systemd[1]: Started A fan manager daemon for MacBook Pro.
systemd[1]: mbpfan.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: mbpfan.service: Scheduled restart job, restart counter is at 4.
systemd[1]: Stopped A fan manager daemon for MacBook Pro.
systemd[1]: Started A fan manager daemon for MacBook Pro.
mbpfan[416]: /usr/sbin/mbpfan needs coretemp support. Please either load it or build it into the kernel. Exiting.
systemd[1]: mbpfan.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: mbpfan.service: Scheduled restart job, restart counter is at 5.
systemd[1]: Stopped A fan manager daemon for MacBook Pro.
systemd[1]: mbpfan.service: Start request repeated too quickly.
systemd[1]: mbpfan.service: Failed with result 'exit-code'.
systemd[1]: Failed to start A fan manager daemon for MacBook Pro.
```
Removed instructions for using -t flag
Moved check_requirements function from main to mbpfan
Moved daemonize and verbose globals from main to daemon
Moved strings for program information from main to global.h
Moved strings for coretemp and applesmc paths from main to mbpfan.c
Updated Makefile
Turned on verboseness for testing
