file jhash.h was initially added on branch linux-2_2.
file swim.c was initially added on branch linux-2_2.
file swim_driver.c was initially added on branch linux-2_2.
file swim_asm.S was initially added on branch linux-2_2.
Add SWIM floppy driver
Re-insert 1.21.2.6 modifications, removed by mistake in 1.21.2.7
Call swim_fd_eject() or swimiop_fd_eject() when we need to load ramdisk from second floppy
Initial 2.4.26 merge.