umock_c could print "from where" does a STRICT_EXPECTED_CALL comes from

I would like to have the "expected" calls be more verbose (for matching purposes) and would be awesome if the expected calls that were not matched by an actual call would also print their origin (`__LINE__` would do).

Start by locating how STRICT_EXPECTED_CALL records expected calls and where unmatched expected calls are printed. Trace the reporting path and confirm how __LINE__ could be retained; done means verbose output identifies the origin of each unmatched expected call and provides more matching detail.

Written by the indexing model from the issue text.