Fixed print bug regarding newlines

[EliasC]

print "foo" -- has a newline
print("foo") -- has no newline (this is the fix)

Before, print("foo") and print("foo{}", "") printed different
things (newline resp. no newline).

[kikofernandez]

could you rebase this and push it again?
I want to check that we can do a fast forward merge.

when you push, you will have to:

git push origin bugfix/print-parsing -f

[EliasC]

I thought I had rebased... My local log looks like this:

901fd3d * HEAD origin/bugfix/print-parsing bugfix/print-parsing Fixed print bug regarding newlines
e96eb24 | * runtime-types Runtime types generated for passive classes, futures and streams
        |/  
c0e5bb0 * origin/master origin/HEAD master Added support custom trace functions

where runtime-types is a separate branch.