(and thus have a new simpler PL_ObjectForKey() function to get a value for
a key). Also, you can now call PL_FreeItem() on a plitem_t to free a
property list item and all of its descendants (if it has any).
Binary plist values are still not supported.
checksum.c) and then move the resutlting checksum.c into libs/utils
ditching nq's. Due to net_com.c, qw's libqfnet.a will need to be deleted or
you will get duplicate symbol link errors. Also merge crc.[ch] and move
qfplits.[ch] to their final homes. Also, remove a slightly overzealous use
of "static" in qfplist.[ch].
