misinterpreted comment

[Stepan Kasal]

Hello,
  a Makefile.am contained the following:

SUBDIRS = goffice # egg
if WITH_GTK
  SUBDIRS += foocanvas
endif

which yielded the following in Makefile.in

SUBDIRS = goffice # egg $(am__append_1)

I suggest that the implementation of the `+=' operator inserts things
before the first comment:

SUBDIRS = goffice $(am__append_1) # egg

But removing the comment would also be acceptable:

SUBDIRS = goffice $(am__append_1)

Thanks in advance,
        Stepan