Add ReLOC - Initial alignment algorithm

ReLOC is an initial alignment algorithm proposed in:
Petrelli A., Di Stefano L., "Pairwise registration by local orientation
cues", Computer Graphics Forum, 2015.

Add ia_ReLOC.h
Add ia_ReLOC.hpp
Add ia_ReLOC.cpp
Add test_ReLOC_ia.cpp

registration/CMakeLists.txt

@@ -1,6 +1,6 @@
 set(SUBSYS_NAME registration)
 set(SUBSYS_DESC "Point cloud registration library")
-set(SUBSYS_DEPS common octree kdtree search sample_consensus features filters)
+set(SUBSYS_DEPS common octree kdtree search sample_consensus features filters keypoints geometry)
 
 set(build TRUE)
 PCL_SUBSYS_OPTION(build "${SUBSYS_NAME}" "${SUBSYS_DESC}" ON)
@@ -75,6 +75,7 @@ if(build)
         "include/pcl/${SUBSYS_NAME}/ia_kfpcs.h"
         "include/pcl/${SUBSYS_NAME}/matching_candidate.h"
         "include/pcl/${SUBSYS_NAME}/transformation_estimation_3point.h"
+		"include/pcl/${SUBSYS_NAME}/ia_ReLOC.h"
         )
 
     set(impl_incs 
@@ -123,6 +124,7 @@ if(build)
         "include/pcl/${SUBSYS_NAME}/impl/ia_fpcs.hpp"
         "include/pcl/${SUBSYS_NAME}/impl/ia_kfpcs.hpp"
         "include/pcl/${SUBSYS_NAME}/impl/transformation_estimation_3point.hpp"
+		"include/pcl/${SUBSYS_NAME}/impl/ia_ReLOC.hpp"
         )
 
     set(srcs
@@ -171,7 +173,7 @@ if(build)
     set(LIB_NAME "pcl_${SUBSYS_NAME}")
     include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include")
     PCL_ADD_LIBRARY("${LIB_NAME}" "${SUBSYS_NAME}" ${srcs} ${incs} ${impl_incs})
-    target_link_libraries("${LIB_NAME}" pcl_kdtree pcl_search pcl_sample_consensus pcl_features pcl_filters)
+    target_link_libraries("${LIB_NAME}" pcl_kdtree pcl_search pcl_sample_consensus pcl_features pcl_filters pcl_keypoints)
     PCL_MAKE_PKGCONFIG("${LIB_NAME}" "${SUBSYS_NAME}" "${SUBSYS_DESC}"
       "${SUBSYS_DEPS}" "" "" "" "")
     # Install include files