Fix some non-initialized variables
close the output files when done
Redo the printing for RCS strings so they don't expand in the awk script too
Do proper tests for variables existance before accessing
Verified output from all scripts is identical to original versions
(1) remove the 'UNSUPP' keyword from the device list,
because it can't be reasonably used (becuase different
devices may be supported on different machines, for
good reason).
(2) enhance pci_devinfo so that class/subclass information
is optional (so pci_devinfo can be used by drivers that
match classes of devices, and want to look up the
devices' names easily).
(3) more known vendors and devices.
