Make Melody work with PSyclone

[rupertford]

I want to use Melody with PSyclone. This turns out to be difficult as PSyclone can modify the search space as transformations are applied (for example loop fusion changes the number of loops in PSyclone's internal representation of the PSy layer). This means that Melody needs to be extended.

With this issue I will add PSyclone's module-inline and loop-fuse transformation support to Melody for the dynamo0.3 and gocean1.0 api's.

I will also update the existing PSyclone example so that it actually works!

[rupertford]

Created a new branch psyclone-melody. There is an existing branch psyclone-gocean-loop-fusion that I need to look at again to see if I can re-use some of the early ideas.