Also updated class_maker.py

Signed-off-by: Harriet Brown <harriet.brown@stfc.ac.uk>

This commit replaces all header guards in API with #pragma once

The overwhelming use case for this method is to
take ownership of a lattice object into Sample.
Using unique_ptr clarifies that this is happening
at the call site and forces a caller to make copy
if that is truly the desired behaviour. The old code
make a copy internally but this was not obvious
from the method call.

It was unused and gave the impression that a wavelength
dependent calculation was being used.
Refs #25957

Remove raw owning pointers from API tests

Update copyright headers in all files

Squashed commit of the following:

* First version of a script to manage copyright statements

re #23468

* Neatened up script, added comments

re #23488

* move script to tools directory

re #23488

* small script changes and a couple of manual file changes

re #23488

* Minor chnage to whitespace detection in regex

re #23488

* Add an excluded directory

re #23488

* remove a repeasted copyright statement in a file

re #23488

* Don't comsume the comment end if it is on the same line

re #23488

* fix error in new copright parsing

re #23488

* remove double copyrifght entry

re #23488

* Improve handling of old copyrights at the start of comments

re #23488

* remove empty comments re #23488

* exclude gsoapgenerated directories

re #23488

* Sort out greedy line matching re #23488

* improve empty comment removal

re #23488

* improve false positives

re #23488

* impressive speedup by limiting regex matching length

re #23488

* remove evil invisible non ascii character

Also upadte the copyright at the same time

re #23488

* resolve multiple copyrights in a single file

re #23488

* resolve an issue with new statement detection

re #23488

* another unprintable unicode character

re #23488

* pep updates and cmake the new copyright fit clang format

re #23488

* update already done new format headers

re #23488

* wrong type of bracket

re #23488

* Update class_maker and friends

re #23488

* Update all copyright statements

re #23488

* clang format re #23488

* flake8 warnings re #23488

* Flake8 warnings re #23488

* Exclude .cmake.in and rb.in files

re #23488

* replace missing line re #23488

* exclude .py.in files as they are flasely recognized as C++

re #23488

* another setp.py.in re #23488

* another .py.in correction re #23488

* Hopefully the last of the .py.in files re #23488

* resolve utf-8 encoding of python files and changed ABINS checksum

re #23488

* updates to unit tests that reference line numbers

re #23488

* remaining unit test files and other fixes

re #23488

Update to clang-format-5 and reformat the codebase 

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
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# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

Includes changes to IObjects and derived types.

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

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

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

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

The files are yet to be renamed

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

This allows for `material` not to be involved in the majority of
mantid source files.

Refs #16346

This is now the minimum component required to create an environment.
Refs #16044

It belongs with the other Instrument component definitions.
Refs #16044

It's very similar to the way OrientedLattice is handled, except a unique_ptr is used to store the object.

Refs #9842

Avoids ambiguity about where the Material is actually stored.
Refs #9842

This offers a massive performance improvement for repeated intersection
calculations as it removes he need to consider the absolute location
of the components. It is also more consistent with the way the sample
shape is dealt with as that does not catre about absolute location either.
The location is defined within the instrument.
Refs #9842

In SampleTest, there was a check if the address of the OrientedLattice
object used to set the OrientedLattice on the sample is the same as the
one pointed by the sample. That is no longer the case.
setOrientedLattice now makes a copy (to reduce memory leaks)