daemon.sh: Create newstatus in temp dir

So we do not touch the directory modification time.
daemon.sh: Use ssh persistent connections

Faster, better, less ressource intensive.
daemon.sh: Reboot before test. Max 12 hours run time.
genreport.sh: Split in multiple files

So we can generate separate reports for 35-xorg, for example.
report/w0-common.sh: Generate graphical reports for wm tests.
Merge pull request #1155 from drinkcat/crouton-autotest

daemon.sh: various fixes.