Removes all of the from __future__ imports that open and close the
brackets on the same line. This is most of them.

Removes a check that uses the -v flag, this was introduced in BASH 4.2,
so apparently breaks certain Mac builders

Runs clang-tidy pass by ref across the codebase to fix-up various
warnings we are seeing in cppcheck

Updates the cppcheck target to run like a typical compilation. This
means CMake will fix-up the headers required on the fly. This reduces
the time compared to adding all headers, and improves the accuracy
significantly.

Fixes sanitizers not switching off if USE_SANITIZER was set to off.
Additionally gets rid of a space between LSAN_OPTIONS and the actual
options, which was causing the suppressions file to be ignored.

Adds quotes to the patching step for span in case there are spaces in
the path causing it to fail

Exits the sanitizer build on first exit, since Ctest is the handler it
will continue to schedule other tests, but mark the current test as
failed this way.

Updates the CMake configuration to set our debugging targets. This means
a user can debug Workbench or System tests, which have a python entry
point, directly from the MSVC IDE.

Also updated class_maker.py

Sets clang-format to run in parallel on build servers where the parallel
package exists

Works around FetchContent attempting to use the gtest installer (which
doesn't exist). Upstream issue is https://gitlab.kitware.com/cmake/cmake/issues/20167

Also set minimum cmake version to that required in CMakeLists.txt

Fixes all flake8 3.7.9 warnings as part of the Python 2->3 transition.

Apply change to insert export macros into class definition using cmake GenerateExportHeader
feature to 3 more projects: API, Crystal and CurveFitting
Have replaced DllExport with the cmake macro except in these places:

a) class templates - the definitions of class template member functions need to be in the
same unit as the declaration so dllimport gives a compilation error in the client code
(C2491 in VS) eg SingleValueParameter, SingleValueParameterParser
b) headers which are in a project but aren't included by any .cpp units in the project
eg IBackgroundFunction.h, ICatalogInfoService.h. In these cases I've removed the DLLExport
attribute completely

For the API target there were a couple of special cases\extras:

API has some conditional use of the extern keyword to control instantiation of template
classes. This has been inserted into the automatically created dllconfig.h using a cmake
switch that allows some custom content to be appended to the end of the file. Few of the
targets require this so I've added a boolean parameter to the wrapper function to handle
this GENERATE_MANTID_EXPORT_HEADER

I also had to add explicit include directories to PythonInterfaceCore where it imports an
API target header (in the unit ExtractWorkspace.h) without having API as a dependency

This commit removes header guards in `class_maker` and replaces them with #pragma once.

Bumps span to the latest version and move the clone to configure time
rather than build time

Bumps the version of GTest to 1.10.0, removes the previous patching
steps, which are no longer needed. Removes the extra handling which is
provided in upstreams CMake, such as managing include directories

3rdparty modules currently warn on them and users can
do nothing about them.
Refs #28159

clang-format version to match the Jenkins one
update mantid-developer version

qtpy needs to find sip as a plain import sip but it is now
installed inside PyQt4.
Refs #28072

Signed-off-by: Steven Hahn <hahnse@ornl.gov>

Updates the Sanitizers to handle whitespace anywhere in the selected
sanitizer mode
Fixes an issue where undefined sanitizer would not work (generator
expressions do not handle whitespace)
Updates documentation following some feedback, and drops some old
information (such as min CMake version)

Fix indentation and suppress all Python warnings

Reverts the indentation changes introduced in an earlier commit by auto
formatting tools. Changes the regex for the address suppressions so we
match Python 2 and 3

Updates CXXTest to inject the environment required for sanitizers rather
than forcing the user to do it themselves

Adds a step to the build scripts for jenkins to run sanitized builds
with the correct environment variables. Also adds leak suppressions for
upstream libraries too

Tidies the Jenkins build scripts by removing some redundant if blocks,
auto-formatting the file and adding some comments

Adds handling for multiple sanitizers using a multi option.

This includes:
- Warning users if they try to use a sanitizer on release builds
- Changing the optimization flag of RelWithDebInfo to get stack traces
- Adding more checks in case someone mis-types
- Adding option for clangs memory sanitizer though this throws an error
  at the moment

A custom mantid-pyqt@4 package was added. Without the standard pyqt@4 installed
the search would fail