LoadInstrument algorithm now uses OptionalBool. MandatoryValidator used and tests for that class have been fixed.

A warning had been appeared because a PropertyWithValue<uint16_t>
was being created. The reason for the warning is that the compiler
turns variables of this type into ints prior to arithmetic operations,
but then assigns back to the narrower type. In other cases the cast
will have no effect.

MultiFileProperty changed to store a vector of vectors of file names. File
names that share a vector are to be added. Old functionality can be produced
by calling "flattenFileNames".  See source code for more info.

MultiFileProperty was used in one place previously (MDMergeFiles), this has
been modified to relect these changes.

Load now implemented in terms of MultiFileProperty, though its interface is
unchanged.  "Filename" input is now parsed as a multi file, and if that
fails old functionality is attempted.  Error reports will output the result
of both attempts.

Some additional template specialisations / "toString" overloads
surrounding the Property class heirachy were necessary to properly support
std::vector<std::vector<std::string> >.

Refs #3157 Sort our System.h. It was becoming a dumping ground. It should only be touched when absolutely necessary as it affects every file in Mantid. Also combined this with Refs #2345 to sort out DLLExport/DLLImport usage. It's done for Kernel, Geometry and API but stuff in the plugins could do with updating as well.

Fix the mac build. The intel compiler defines size_t to unsigned long which doesn't match uint64_t that was exported. Re #3008

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

re#1699 -FacilityInfo is changed to support multiple information catalogs .IPropertyManager is changed to support array property of type long long

There are changes to WorkspacePropertys that affect PropertyManager.  In all cases Property.setValue() now returns a string containing any validation errors.  This is a change to the WorkspacePropertys that sometimes ignored errors.  There are descriptions for some propertys in MantidPlot available as a tooltip re #593 and re #410 

Added an ArrayProperty class. Can also directly have a PropertyWithValue of type std::vector<int/double/string> if preferred (although that's not as convenient to use with declareProperty). Re #99.