Expose vis it bridge

This aims at exposing VisItBridge for external vtk modules, specially in the context of a ParaView plugin.

As a main change, the bridge logic is in its own module. We now have the following:

• the module VisItLib is the core of VisIt, in the Library directory,
• the module IOVisItBridge contains only the actual bridge part, in the AvtAlgorithms directory with the abstract vtk readers, *.in files and the VisItReader.cmake script
• the module IOVisItReaders contains the readers, in the databases directory

Related changes in ParaView are here: paraview!4462 (closed)

Errors:

• commit 2c665f01 adds bad whitespace:

  AvtAlgorithms/vtkAvtMTMDFileFormatAlgorithm.cxx:136: trailing whitespace.
  +        case AVT_CSG_MESH:          
  AvtAlgorithms/vtkAvtMTMDFileFormatAlgorithm.cxx:165: new blank line at EOF.
  AvtAlgorithms/vtkAvtMTSDFileFormatAlgorithm.cxx:111: new blank line at EOF.
  AvtAlgorithms/vtkAvtSTMDFileFormatAlgorithm.cxx:774: new blank line at EOF.
  AvtAlgorithms/vtkAvtSTMDFileFormatAlgorithm.h:105: trailing whitespace.
  +  
  AvtAlgorithms/vtkAvtSTSDFileFormatAlgorithm.cxx:225: new blank line at EOF.

• commit 2c665f01 not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit 73c225f9 not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit a144e876 not allowed; the Library/VisItLib/CMake/VisItCommon.cmake file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit 18dceccd adds bad whitespace:

  AvtAlgorithms/CMakeLists.txt:1: trailing whitespace.
  +set(CMAKE_MODULE_PATH 
  Library/CMakeLists.txt:1: trailing whitespace.
  +set(CMAKE_MODULE_PATH 
  Library/CMakeLists.txt:8: new blank line at EOF.

• commit 18dceccd not allowed; the Library/VisItLib/CMake/VisItCommon.cmake file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit 18dceccd not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

Please rewrite commits to fix the errors listed above (adding fixup commits will not resolve the errors) and force-push the branch again to update the merge request.

@utkarsh.ayachit @ben.boeckel Can I have your input please ? I will use the third party process but it seems easier for the review to put all that here.

@mwestphal FYI

changed the description

added 4 commits

• 5d538ea3 - Configured header use custom EXPORT macro name
• 1f7f25fd - Remove broken path
• 2606ea53 - Fix module dependency
• 5e1b0dcc - VisIt lib should install headers

Compare with previous version

Errors:

• commit 2c665f01 adds bad whitespace:

  AvtAlgorithms/vtkAvtMTMDFileFormatAlgorithm.cxx:136: trailing whitespace.
  +        case AVT_CSG_MESH:          
  AvtAlgorithms/vtkAvtMTMDFileFormatAlgorithm.cxx:165: new blank line at EOF.
  AvtAlgorithms/vtkAvtMTSDFileFormatAlgorithm.cxx:111: new blank line at EOF.
  AvtAlgorithms/vtkAvtSTMDFileFormatAlgorithm.cxx:774: new blank line at EOF.
  AvtAlgorithms/vtkAvtSTMDFileFormatAlgorithm.h:105: trailing whitespace.
  +  
  AvtAlgorithms/vtkAvtSTSDFileFormatAlgorithm.cxx:225: new blank line at EOF.

• commit 2c665f01 not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit 1f7f25fd not allowed; the Library/VisItLib/CMake/VisItCommon.cmake file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

• commit 5e1b0dcc not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

Please rewrite commits to fix the errors listed above (adding fixup commits will not resolve the errors) and force-push the branch again to update the merge request.

added 4 commits

• cb2d6058 - Puts AvtAlgorithm in its own module
• bd66a9f7 - move templates to avtAlgorithm
• aa485fb8 - Configured header use custom EXPORT macro name
• ec8d86f6 - VisIt lib should install headers

Compare with previous version

Errors:

• commit ec8d86f6 not allowed; the Library/VisItLib/CMake/VisItCommon.cmake file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.
• commit ec8d86f6 not allowed; the Library/VisItLib/CMakeLists.txt file is maintained by the third party utilities; please use scripts/update-avt.sh to update this file.

Please rewrite commits to fix the errors listed above (adding fixup commits will not resolve the errors) and force-push the branch again to update the merge request.

mentioned in merge request third-party/visit!19