The TSC decided to move to devtoolset-7 on rhel7 to allow for C++14
standard code in mantid.

The main reason is to remove stale compiled-python files but there
is no harm in removing untracked files.
Refs #0

Previously we only removed the properties file but some tests
could touch other parts of the user config so remove it all
and create a blank file to ensure the environment is clean.
Refs #22063

(cherry picked from commit 07c1513f)

Previously we only removed the properties file but some tests
could touch other parts of the user config so remove it all
and create a blank file to ensure the environment is clean.
Refs #22063

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Merge done to enable documentation be be fixed, because of removal of
alias directive and addition of related algorithms directive.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>

The -only cases were only checking if changes had/had not occurred
in a given folder and not if there were changes elsewhere.
Also simplifies buildscript to use checks on all OSs.

The script is reporting incorrectly and giving build failures

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Attempts to add more intelligence into the unix buildscript to avoid unnecessary build
steps when there are no code changes.

This will catch referencing errors before they reach master.

Includes a patch to remove a Qt dependency in vtkPVVTKExtensionsDefault
that is already in ParaView master
Refs #0

Ensures that pull requests building with different options don't
cause cross-talk while the workbench tests are fixed.
Refs #0

Refs #0

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Refs #0

Along with disabling environment variable updates by default.
Developers will not then accidentally build a release package
when building locally.

Merge to ensure CrystalFieldFunction is available and up to date.

Refs #0

If they don't match we remove them before running cmake.