Sample program for hostio feature

<How to compile>
If you are a PARTNER-NW user, compile this program by
executing 

	make -f Makefile.ptn64

If you are an Emulation board user, compile this program
by simply executing 

	make

NOTE: To use hostio feature of PARTNER-NW, you need to
 add -DPTN64 option when compiling both host and target
 programs. Also, please note that you need to create
 VI manager before you use hostio on this environment.

<How to execute>
If you are a PARTNER-NW user, launch the PARTNER window 
before you execute 

	host

in a UNIX shell window.
If you are an Emulation board user, simply execute

	host

in a UNIX shell window.