Added Davy's example as the short-circuiting test.
Fixed (again!) the use of the unicode space category in the rascal
grammar, put one of the contributors back to the list.
Added the test to prevent from reincarnation of the problem with the
capital 'A'.
Merge branches 'master' and 'open-and-closed-recursion' of https://github.com/cwi-swat/rascal into open-and-closed-recursion
Restore the syntactic add-ons after the merge.