Merge topic '13984_64bit_headers_for_xml_writers' into pv-master

9b1a0f4f Merge topic 'bug_2379' into master
444257e5 BUG #2379. Passing flags correctly to internal writers.
275e4b23 Merge topic 'chart-selection-modes' into master
840f0ee5 Merge topic 'matplotlib-warning-status' into master
6884e6da Merge topic 'scalarbar-leak' into master
cc42420f Fix for subclasses overriding EditAnnotations.
f82398af Introduced a new chart selection mode
d77d09c5 Merge topic 'imageproperty-test' into master
2465c99f Fix X BadRequest errors in TestInteractorStyleImageProperty.
9c18166e Merge topic 'fix-GRAMdetection-overflow-under-X' into master
3de84515 Merge topic 'remove-fast-numeric-conversion' into master
d72bb3ca Merge topic 'garbage-collection-cleanup' into master
899403c4 Merge topic 'vtkFieldData_AddArray_add_documentation' into master
84c42607 Fix a leak revealed by ParaView; use SmartPointer.
853f8540 Merge remote-tracking branch 'pvvtk/pv-master' into HEAD
a7496239 Document the return value of vtkFieldData::AddArray().
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