suppress warnings from libxml2

It appears libxml2 uses gtk-doc instead of doxygen and that
clang -Wdocumentation follows include files across libraries.
So our normal third party module warning suppression won't work.

Change-Id: Ic53045a570aa97c77352b5585dacd8cc47342895
IO/Image: Fix TestSetFileNames to glob only numeric suffixes

Teach IO/Image/Testing/(Python|Tcl)/TestSetFileNames.(py|tcl) to glob
only Data/headsq/quarter.* files ending in a digit.  This will avoid
picking up ".<algo>-stamp" files created by the ExternalData module.

Change-Id: Ieb145f1d41edbcce7e57355b485baf2dd8b4b9ee
Merge topic 'update_vtk' into pv-master

155b7f3 Update the scalar bar build time.
1967fef Fix compilation against libav 54 and OGG-Theora extension detection
a70fdae Merge branch 'fix-image-append-rel' into release
Merge remote-tracking branch 'pvvtk/pv-master' into HEAD

* pvvtk/pv-master:

Change-Id: I86748e0bb3022ad16b1fc6654f9de68ee315845c
Merge topic 'TestSetFileNames-glob-numbers' into master

7b3f3da0 IO/Image: Fix TestSetFileNames to glob only numeric suffixes
COMP 12945: Fix Qt5 specific build error related to vtkQtCxxTests

While commit 384636e allows VTK libraries to be compiled against Qt5, an
error preventing the tests from being built on Unix platform has been
introduced while working on the different revision of the topic:

  ../TestQtDebugLeaksView.cxx:20:
  ../qglobal.h:1079:4: error: #error "You must build your code with position independent code if Qt was built with -reduce-relocations. " "Compile your code with -fPIC or -fPIE."


This happened when it has been decided to use:
  VTK_QT_VERSION VERSION_GREATER "4"
instead of
  VTK_USE_QT5

At that time, the change has been tested doing a clean build on
windows where the error wouldn't happen.

This commit ensures VTK libraries, tests and examples can be built against
Qt5.

Finally, note that some of examples have been commented out while
modularizing VTK. This commit and commit 384636e are not addressing build
issue that would occur if re-enabling the missing examples.

Change-Id: Id72588d9f2d9cd9f45b2fe6a07f59513df9fd4c5
Merge topic '12945-qt5-compat' into master

e4e3dfa7 COMP 12945: Fix Qt5 specific build error related to vtkQtCxxTests
Use newest FFMPEG API.

av_new_stream was changed to avformat_new_stream in ffmpeg 53.17.

Change-Id: Id31f57bf5e5cb67c439cdbc4f458471acd163abd
Merge topic 'ffmpeg_newest_api' into master

d48033e1 Use newest FFMPEG API.
Fix combination of java wrapping and testing off.

Change-Id: I451626004ef93bf1e42f393c6af8f87cf06dec57
Merge branch 'scalar_bar_font_scale-rel' into release

Change-Id: If84aee62312408127e153bd55e9cc65785f1eac5
Merge branch 'release'

Change-Id: I28148a961c10a676bcb55597ea592eb61dff0ede
Fix typos

Change-Id: I2edeb9e78066aa766e47ba37af92ddcbfe75a436
Merge topic 'fix-vtk-typos' into master

5ef33d3b Fix typos
Merge topic 'suppress_libxml2_doc_warnings' into master

f62f9fd0 suppress warnings from libxml2
Merge topic 'java_sans_testing' into master

26acf648 Fix combination of java wrapping and testing off.