Allow to trigger twisted with no signal handler

This is useful when we want to run it within a thread.

Change-Id: I9aa6aa77976745b67558f70dbb0df7c874847bde
Merge topic 'pvw-signal-handler-arg' into next

d0621ce Allow to trigger twisted with no signal handler
Create Python friendly ProcessRMIs

Change-Id: I7975a232bdda92fd991fc6a27539248857db21ce
Merge topic 'pvw-python-friendly-processRMIs' into next

1d9ac29 Create Python friendly ProcessRMIs
Tecplot: Re-add the default ascii format extension of dat.

The tecplot manual states that the default ascii file format extension
is .dat, which we are missing from our tecplot readers for some
unknown reason.

Change-Id: I4492576d31f403d6b8141e535eca157d3b803020
Update the VisItBridge to update tecplot reader extensions.

Change-Id: I4492576d31f403d6b8141e535eca157d3b803020
Merge topic 'tecplot_extensions' into next

3d4785b Update the VisItBridge to update tecplot reader extensions.
e797c98 Tecplot: Re-add the default ascii format extension of dat.
Add ParaView option to disable matplotlib

This is useful when ParaView is run inside iPython in a background thread.

Change-Id: Idea0c8cac082d0e6d2c50a3c73d31a5d2f0fd039
Merge topic 'pvw-python-friendly-processRMIs' into next

c31b570 Add ParaView option to disable matplotlib