Another round of merge.

Another round of merge.

(1) Bug fix (pass boot drive):

	pc98/boot/biosboot/boot2.S

(2) Delete code for unsupported high-resolution modes and move old
    Epson notebook code to epsonio.h:

  	pc98/boot/biosboot/io.c
	pc98/i386/vm_machdep.c
	pc98/pc98/fd.c
	pc98/pc98/pc98.c
	pc98/pc98/pc98.h
	pc98/pc98/epsonio.h (new)

(3) Change aic driver so that PCMCIA cards (I/O port same as PC/AT)
    and PC-9801-100 cards can be selected with a flag in kernel config
    file:

	pc98/pc98/aic6360.c
	pc98/pc98/aic_98.h (new)

(4) Fix wcd entry (it was broken).  Delete mcd, it doesn't work on
    98.  Change aic entry according to above:

	pc98/conf/GENERIC98

(5) Move pc98_machdep.c to top of files in pc98/pc98:

	pc98/conf/files.pc98

(6) Delete empty lines:

	pc98/i386/locore.s

(7) Fix (it didn't work if I586 was specified):

	pc98/pc98/clock.c

(8) Staticize:

	pc98/pc98/pc98_machdep.c

(9) Enable workaround for Cyrix bug for 5x86 also:

	pc98/i386/machdep.c
	pc98/i386/trap.c

All the above deletes this file too:

	pc98/i386/pmap.c

(phew!)
Submitted by:	The FreeBSD(98) Development Team