1. Add the parser based on RPN;
2. For test sample1 named "ground-water-daily.xls", using the compound formula
   to do calculation;
Add the compound kernels:
Formulae include "AVERAGE,MAX and MIN".Compound formulae include "AVERAGE
-(+,*,/)","MAX -(+,*,/)" and "MIN -(+,*,/)";
3. For formulae which do not work in GPU, they'll work in CPU;
4. For compound operators(-,+,*,/), they'll be calculated one by one in GPU as
the sequence of RPN;
5. Add the start and end position to fit for the sliding window;
6. Modify kernels by using vector for AMD GPU.

Conflicts:
	sc/source/core/opencl/formulagroupcl.cxx
	sc/source/core/opencl/openclwrapper.cxx

Change-Id: I6157008575ce89ddd3e7bf552a87812474af4125