fix INSTALL.RTLinux, INSTALL.RTAI

BUG in do_test_for_insn_bits() (due to -EACCES)

ni_mio_common: doesn't do 2-chan ao.

das6402 needs cleanup

check each driver init for stuff

register_symtab

fix PCI code, use pci_find_device()

standardize error codes

verify PCI-6503 code

get rid of spurious "char-major-98-0 not found"

develop 8253 and Am9513 code

different error code for board error vs buffer overflow

spinlocks

add pci_enable_device where appropriate

autoloading causes BUG on failure.

fix comedi_report_boards to use /proc