Use more specific log area for the "binary file" messages

So that they can easily be avoided as they are rather uninteresting, in my
humble opinion. Did not want to drop these SAL_INFOs altogether as this after
all is not "my" code.

Change-Id: Icb92f4ca2715c3dfef522319fdb1f81b782ec6cc
Log the state as an integer, not as a byte with value 0, 1 or 2

It is rather hard to see in a terminal window whether a char with value 0, 1
or 2 has been printed;)

The elegant thing to do would of course be to make the enum in question into
an enum class, and define an operator<< for it, to output it symbolically. But
I can not be distracted into that now.

Change-Id: Ibfa4f4d5925d1db3cbbf35f84df70640f47a8d56