Change version from master for flann and pcl

[simwijs]

Because of updates to the repositories (for instance the removal of an included library) these versions are non-working. These commit hashes work for me and I suspect it is these versions that the repository is intended to work with.

[k-okada]

I had a same problem and fixed by this PR.

-- Detecting CXX compile features - done                                                      
-- Could NOT find HDF5 (missing:  HDF5_LIBRARIES HDF5_INCLUDE_DIRS)                     
CMake Warning at CMakeLists.txt:80 (message):                                                 
  hdf5 library not found, some tests will not be run                          
                                                                                              
                                                                                 
-- Try OpenMP C flag = [-fopenmp]                                                             
-- Performing Test OpenMP_FLAG_DETECTED                                      
-- Performing Test OpenMP_FLAG_DETECTED - Success                                             
-- Try OpenMP CXX flag = [-fopenmp]                                                          
-- Performing Test OpenMP_FLAG_DETECTED                                                       
-- Performing Test OpenMP_FLAG_DETECTED - Success                               
-- Found OpenMP: -fopenmp                                                                     
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")                              
-- Checking for module 'liblz4'                                                               
--   No package 'liblz4' found                                                      
CMake Error at /usr/share/cmake-3.5/Modules/FindPkgConfig.cmake:367 (message):      
  A required package was not found                                                
Call Stack (most recent call first):                                                          
  /usr/share/cmake-3.5/Modules/FindPkgConfig.cmake:532 (_pkg_check_modules_internal)   
  CMakeLists.txt:150 (pkg_check_modules)