build sharedCDSVectorFactory into shift_calculators.so
add a complete build script [build_all.sh]

notes:
1. this will call build_xpypot.sh setup.py and build_extension.sh 
2. before use edit build_all.sh and set 

xc_xplor_version e.g 2.31.0
xc_xplor_root -> the root of you xplor nih distribution
xc_architecture -> the systems architecture e.g. Linux_i686
xc_python_version e.g. 2.6