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Fix flann build problems with recent CMakes

See merge request ComputerVision/LidarView!131

Feature/pcap tester

See merge request ComputerVision/LidarView!63

One client is behind a firewalled network and cannot clone using ssh.

Set to lower case cmake option Enable_xxx for consistancy with Superbuild

- can now be launched from install/bin
- now added to packages

Tested on Linux, Windows and macOS.

# Conflicts:
#	LidarPlugin/CMakeLists.txt
#	Superbuild/Projects/nanoflann.cmake
#	Superbuild/versions.cmake

Add a clustering algorithm : DBSCAN

See merge request ComputerVision/VeloView!18

Was broken since superbuild upgrade

This avoid run-time error due to the conflict between the VTK-provided
protobuf 2.6.1 at runtime and system-wide 3.0+ version used by other
superbuild projects, that make their code require 3.0+ version at runtime

Add Windows build bot

See merge request bjacquet/VeloView-kwinternal!251

This reverts commit e762686d3978102c063fbc668704e1f1fd6d2051.

Reasons not to copy ninja.exe to build directory:
1) it does not make the build much simpler: you still have to install
git, cmake and Visual Studio. So downloading ninja.exe and adding it to
your path is not a lot of work (If you are lazy place it in
C:\Windows\System32). That takes approximately 1 minute.
2) it does not add ninja.exe to the path, so if you want to rebuild
only veloview (for a faster build) you go to
common-superbuild/veloview/build (as indicated by the developer guide),
and in this directory there is no ninja.exe so your command with
"ninja" fails and you are perplexed.
3) it complexifies the work of the CI scripts

Was required to package on Windows

To fix bug preventing ceres build on windows

Was needing static boost which is not built anymore.

In order to have a straight-forward merge from Gitlab merge request UI.
+ added option -DBoost_NO_BOOST_CMAKE:BOOL=true to pcl to fix building
+ upgraded flann from 1.8.1 (plus patches) to 1.9.1

It is unlikely that this variable will change soon.
This variable is kept should we want to go back to Qt 4
(should not append hopefully because ParaView recently
dropped Qt 4 support)

enable option to generate filter documentation

See merge request bjacquet/VeloView-kwinternal!219

aka "Bundling", "creating a bundle"

Also works if brandind != "VeloView"