Create the Algorithm Factory and Algorithm Base Class

[Nick Draper]

Import as required from Gaudi

On the algorithm base class we will have to consider the interface as in GAUDI the execution was never public. For Mantid it will be.

Gaudi had sysInitialise calls Initialise sysExecute calls Execute etc.

We will probably need Initialise calls a private init Execute calls a private exec etc

[Russell Taylor]

(In [40]) First commit of code relating to the algorithm interface & base class. Re #19.

[Russell Taylor]

(In [42]) Added IProperty interface. Re #19.

[Russell Taylor]

(In [44]) Simple, temporary way of including algorithm properties added. Re #19.

[Russell Taylor]

(In [46]) First version of Algorithm Factory. Re #19.

[Russell Taylor]

(In [47]) First version of Algorithm Factory. Re #19.

[Russell Taylor]

(In [48]) Re #19

[Stuart Campbell]

This ticket has been transferred to github issue ​867