FastBit IBIS example programs.

Files
file	ardea.cpp
	This is a simple test program for functions defined in ibis::tablex.
file	ibis.cpp
	IBIS -- Interactive Bitmap Index Search.
file	rara.cpp
	This is a simple test program for the querying functions of ibis::query and ibis::part.
file	tcapi.c
	A simple test program for functions defined in capi.h.
file	thula.cpp
	This is a simple test program for the querying functions of ibis::table.