added equal3() method to auxiliary.h and added a check to getFullLeavesIntersectedBySphere to prevent inclusion of source point leaf
reformatted according to PCL coding style
added unit test case for the ORROctree function getFullLeavesIntersectedBySphere()
changed the main error messages
more formatting changes to adhere to pcl coding style
fixed spacing issues
Merge pull request #269 from musi00/ObjRecRANSAC_addModel_error

ObjRecRANSAC::addModel() error