Full install: f.s. check maximal count

K Godt gave me the idea for this, see previous blog post:
http://bkhome.org/archive/blog2/201207/full-install-fs-check-at-bootup.html

A f.s. check is performed if an abnormal shutdown, now also if maximal mount count reached.

Woof commit:
http://bkhome.org/fossil/woof2.cgi/info/ac97a7c17b

Tags: woof