Refs #8983

The BinaryOperationTable was not deleted at the end of the operation
causing a memory leak. The shared_ptr will take care of this properly.
Refs #7994

There's no way that last test needed to be that big.

BinaryOperation::checkSizeCompatiblity and overridden versions in child
classes have been changed to return std::string rather than bool so that a
useful error message can be passed back down the call stack before finally
being used in throwing std::invalid_argument in BinaryOperation::checkCompatibility.
A return of true is now a return of "" (empty string). A return of false is
now a string of length 1 or more containing an error about why the
algorithm couldn't complete. Functions that used the bool return before
have been changed to use checkSizeCompatiblity(lhs,rhs).empty as that is
the equivelent of the old boolean return.
Removed a load of commented-out code from Multiply.cpp.
Indented WeightedMean.cpp and WeightedMean.h as per the guidelines.

Refs #4489

by using the ADS::retrieveWS<Type>() method.

Add a copy constructor to Instrument. Oh, and go on a const-correctness hunt that led this commit to touch slightly more than just the one class. Re #1944.

- Refs #3203: Implemented ISpectrum. It is the base class of EventList and Histogram and contains the spectrum number and list of detector IDs for a given spectrum.
- ISpectrum return X/Y/E vectors. EventList, e.g. calculates the histogram on the fly.
- Moved the EventWorkspace MRU list of histograms to be contained within the EventList; better code separation. Made a EventWorkspaceMRU class to encapsulate this more easily.
- Workspaces must implement getSpectrum (const/not const) to return a ISpectrum object. dataX(i), etc. methods on MatrixWorkspaces no longer need to be overridden since they call getSpectrum()
- Got rid of EventWorkspace::getEventListatPixelID() and doneLoadingData()
- replaceSpectraMap() methods offers backwards-compatibility with SpectraDetectorMaps by setting the specNo and detector list when called. Must be called AFTER creating all the spectra in a workspace.
- Refs #3318: maskWorkspaceIndex() implemented as part of ISpectrum.

This should get the windows unit tests passing reliably. Visual Studio compiler optimizations are now turned off in parts of BinaryOperation.cpp. Re #2669.

Refs #2408: Multiply now correctly handles commutativity with EventWorkspaces. Tests made significantly more robust.

Refs #2277: Divide algorithm has new parameter to perform division by grouped spectra, where workspace indices do not match. e.g. sample / vanadium (where vanadium was averaged per bank). Refs #2023.

Tell scons to build the new TestHelpers package so that ISIS buildservers are still happy with moving the test helpers while the CMake transition is still in progress. Refs #2196 and #1881

Rename Framework code directory to just that. Also delete Main and VS & Eclipse project file. Re #1881.

Refs #1784: Reworked the BinaryOperation framework to handle EventWorkspaces in a more general fashion. Tested working with the Plus algorithm.

Updated BinaryOperation to be mask aware, along with various other cleanups discovered along the way. Re #1687

Changed cache usage to not recalculate cached data if it was still valid,
also separated calculation of Y cache from E cache, as E will be requested less often.

All of this was done to allow the addition of tests in DivideTest which required errors. 
re #1367, re #1357

re #1367

Added eventworkspaces to binaryOperation test

Add propagation of masking to BinaryOperation. Also some tidying up while I was there that spidered a small amount. Re #632.

Add the first version of a UnaryOperation base algorithm class, along with a sample algorithm to correct a workspace according to a polynomial function of the X values. Re #520.

Also introduced a typedef for out workspace data storage (std::vector<double>): MantidVec.
Re #509.

re #351. A change to the workspace hierarchy. What used to be Workspace is now called MatrixWorkspace. New Workspace is a base class for MatrixWorkspace and TableWorkspace. TableWorkspace can be stored in AnalysisDataService and passed to algorithms as a property.

Some tidying up as I've been getting started on adding detector offsets. Main changes: ConvertUnits checks if the input workspace already has the desired output unit. Units are copied over in the create-from-parent workspace factory method. Re #186