Changes:

	- changed types in SQParameters from float to double to eliminate warnings for loss of precision.
	- added macro OPE_EXPORT to make code portable to different platforms
	- added OPESettings.[h, cpp] file to store OPESettings
	- changed OPECommon to hold macro, constant defs used throughout OPE
	- eliminated some unreferenced local variables in SQFitting.cpp and Minimization.cpp
	- reduced warnings
Merge branch 'master' of https://github.com/CARRTUSF/ObjectPoseEstimation