A small change to gii

[Ingo Krabbe]

Compiling libgii with pcjoy support revealed a small problem with the
input.c source file since it does:
        #ifdef HAVE_SYS_IO_H
        #include <sys/io.h>
        #endif
        #ifdef HAVE_ASM_IO_H
        #include <asm/io.h>
        #endif
With my linux system I have both: sys/io and asm/io with multiple defined
symbols then. Using
        #ifdef ....
        #else if defined ...
        #endif
solved the problem. I dont know if this is portable, but it works for me.
Some check should be done for this problem in the future.

CU INGO