xmlCheck using the right directory for .test

This fixes #617 

Note that some XML checking errors will remain after merging this in develop (eg. the ones related with scopeValue), that will be fixed in others PRs.
And now I see all of it.
You create a directory of the 'NNN_xxx' we use for the functests, underthe temposrary directory and this way it is ok to have the same filename for functests.

NTC