Add break lines to makefile

[anitacaron]

Fixes #553

[matentzn]

Thank you! What line break rule did you apply? What is the maximum line break length now that is permitted?

[matentzn]

Also did you try building an example to see if you didn't remove too much whitespace?

[anitacaron]

What line break rule did you apply? What is the maximum line break length now that is permitted?

I put line breaks when the command line was more extensive than the general commands and when there was more than one command in the same line. I was looking into a real Makefile (UBERON).

Also did you try building an example to see if you didn't remove too much whitespace?

Looking better in the result, I'll fix some whitespaces.

[matentzn]

Try this on PATO and CL - there are a lot of empty lines generated in the resulting Makefile!

[matentzn]

I think its fine, but I wanted a brief look of @gouttegd when he is back just in case.

[matentzn]

I will risk it.

[gouttegd]

@matentzn I don’t see any problems with the changes. I would have broken some lines even more (especially for conditional constructs), but that’s a detail and/or a matter of taste.