LP#1731021: Support fine detail enhancement to SIP. The particular flavor of

LP#1731021:  Support fine detail enhancement to SIP.  The particular flavor of
fine detail output is manufacturer dependent, although 3m is popular, and
the default.  To configure the selection, modify the
/openils/conf/oils_sip.xml file.

Testing: See the /openils/conf/oils_sip.xml file and test all supported
values for the av_format option.  You should also test the case where
the option is omitted, or a non-supported value.   I am not sure what
happens if you supply more than one option with same or different values,
but this is a non-supported degenerate case.

For each test value, ensure tha the fine item detail is the expected format.

Signed-off-by: Dan Pearl <dpearl@cwmars.org>