Merge branch 'feature/shell2python/installexternal' into 'releases/3.4'
Rewrite Install external with Python
Closes #866 (closed)
See merge request !2252 (merged)
(cherry picked from commit fffd17dd)
c3e8c7b8 [bin][installexternal] updated installexternal and translated shell script to python script b43b9e0e [changelog] Add changlelog entry for installexternal script translated to python
Edited by Hanchuan Wu