ENH : update liblas to 1.6b2

Utilities/otbliblas/CPackSourceConfig.cmake

Utilities/otbliblas/CTestConfig.cmake

Utilities/otbliblas/CTestTestfile.cmake

Utilities/otbliblas/Makefile

Utilities/otbliblas/apps/CMakeLists.txt

Utilities/otbliblas/apps/Makefile

Utilities/otbliblas/apps/bigfile_boost_iostreams_test.cpp

Utilities/otbliblas/apps/bigtest.c

Utilities/otbliblas/apps/cmake_install.cmake

Utilities/otbliblas/apps/las2las-old.c

Utilities/otbliblas/apps/las2las.cpp

Utilities/otbliblas/apps/las2oci.cpp

Utilities/otbliblas/apps/lascommon.c

Utilities/otbliblas/apps/lasindex_test.cpp

Utilities/otbliblas/apps/lasinfo-old.c

Utilities/otbliblas/apps/lasinfo.cpp

Utilities/otbliblas/apps/laskernel.cpp

Utilities/otbliblas/apps/laskernel.hpp

Utilities/otbliblas/apps/liblas-config.in

Utilities/otbliblas/apps/oci_util.cpp