NOTE on compile of yca.c  for yorick
=======================================

1) modify yca.i yscan.i 
   modify yca.c yscan.c

	yca.i  
	yscan.i is automatically included in yca.i

	yca.c  
	yscan.c is automatically included in yca.c

2) Create Makefile 
	yorick -batch make.i yca yca.i

	modify Makefile if necessary

	rename the Makefile as Makefile.yca

3) make -f Makefile.yca

4) Run yca
	help,yca
		list all functions in yca.i
	help,yscan
		list all functions in yscan.i

