[balsa] Silence some automake whining

[Peter Bloomfield <peterb src gnome org>]

commit 03faa79e1097f86cad9c460f88dddc32eaecbdce
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue Oct 18 09:40:22 2016 -0400

    Silence some automake whining
    
        * Makefile.am: create balsa-spell-extra-dist using tools that
        automake does not whine about.

 doc/ChangeLog   |    5 +++++
 doc/Makefile.am |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/doc/ChangeLog b/doc/ChangeLog
index 5289af6..e1984b2 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,8 @@
+2016-10-18  Peter Bloomfield  <pbloomfield bellsouth net>
+
+       * Makefile.am: create balsa-spell-extra-dist using tools that
+       automake does not whine about.
+
 2016-10-06  Peter Bloomfield  <pbloomfield bellsouth net>
 
        Do not track translated help files in git
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 46902aa..3a376bc 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -34,7 +34,7 @@ HELP_FILES   =                                                        \
                win-search.page
 
 helpdirs = C $(HELP_LINGUAS)
-balsa_spell_extra_dist = $(foreach lc,$(helpdirs),$(lc)/preferences-spelling.page) #
+balsa_spell_extra_dist = $(helpdirs:=/preferences-spelling.page)
 
 else
 HELP_FILES   =                                                 \