Add the creation of a MANTIDPATH environment variable to the installer

[Russell Taylor]

And append it to the PATH when installing (and perhaps the PYTHONPATH as well).

[Nick Draper]

Moved as part of the end of Iteration 19

[Martyn Gigg]

(In [7070]) Updated RPM and windows installers to create an environmental variable called MANTIDBIN pointing to the installed Mantid binary directory. This directory is also appended to the PATH. Currently trying to figure this out on the Mac. Re #870

[Russell Taylor]

Martyn - I think that your choice to call this MANTIDBIN means that it won't play ball with the changed Mathieu made under ticket #1594, where he called it MANTIDPATH.

[Stuart Campbell]

What about MANTIDROOT ?

[Martyn Gigg]

(In [7096]) Added the creation of the MANTIDBIN environmental variable to the MacInstaller. There is now a postflight script that is executed at the end of the install which creates/updates the $HOME/.MacOS/environment.plist file. Re #870

[Martyn Gigg]

(In [7098]) Refs #870. Altered variable name to be consistent with previous usage in #1594.

[Martyn Gigg]

So I've changed the name to MANTIDPATH so that it won't impinge on any of Mathieu's existing usage of the variable. I went with MANTIDBIN originally so that it was clear where it was pointing but if things are already using MANTIDPATH then that's fine.

Also, I haven't added it to the PYTHONPATH from a system point of you since PyQt/sip users would see our version rather than one they might be expecting.

[Stuart Campbell]

This ticket has been transferred to github issue ​1718