additional 700 byte reduction in drivers/char

Hello again,

I had some time this evening so I did a quick pass through arch/i86/drivers/char. These changes aren't as well tested as the previous ones, if at all. Same configuration as before.

cvs source (with fs/minix/bitmap.c fix):
Root device is (0, 0)
Boot sector 512 bytes.
Setup is 1772 bytes.
System is 120672 B (61456 B code, 7940 B data and 51276d B bss) System is 69428

previously patched version
Root device is (0, 0)
Boot sector 512 bytes.
Setup is 1772 bytes.
System is 118380 B (59472 B code, 7640 B data and 51268d B bss) System is 67144

previously patched version with arch/i86/driver/char patch (attached)
Root device is (0, 0)
Boot sector 512 bytes.
Setup is 1772 bytes.
System is 117544 B (58704 B code, 7572 B data and 51268d B bss) System is 66308

Manuel

Hi Manuel.

I've grabbed these, and will try them out on my system. If the result is that the system still works, I'll commit them and credit you with the tweaks for your efforts.

Best wishes from Riley.