log insert/remove events using the logstr, if specified for that card,
or the manufacturer + version strings from the cis if not. This
eliminates the need to have logger in the pccard.conf file which makes
it easier to move pcardd to /sbin later if we need to. This also
reduces the pccard.conf file size from 53k to 28k, which will help the
install disk a little.
Also, minor cleanup of free usage (if (x != NULL) free(x); is
identical to free(x); for all versions of C that we care about).
Reviewed by: iwasaki (who proposed the logstr keyword).
Documentation and fixes to pccard.conf to follow.
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