The new tests for parsing the syslog option pass.

Making them pass required some changes to `src/configparse.cpp`, where
the value of the option was compared to a character pointer rather than
an actual string value.
Added extra spaces to config test values.

This ensures that leading and trailing spaces make no difference when a
configuration option is parsed. (As it turns out, inih takes care of
trimming the extra spaces, so the tests pass).