Don't document non-bugs in the BUGS section, or anywhere else. It
is not a bug to drop data when overloaded. The compile-time tuning
options turned out to be not very useful, and aren't supported
offically.
Documented the not so new option CY_PCI_FASTINTR.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.