[gcompris] Minor installation and make dist issue. Now it works fine even if boards/voices is a symbolic link.

[Bruno Coudoin <bcoudoin src gnome org>]

commit 1bb2e9b53706c3b5e4c1119408987eccfe767b72
Author: Bruno Coudoin <bruno coudoin free fr>
Date:   Sat Feb 19 22:31:05 2011 +0100

    Minor installation and make dist issue. Now it works fine even if boards/voices is a symbolic link.

 Makefile.am |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index bd0006d..46f03b7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -56,13 +56,13 @@ install-data-local:
 	@$(NORMAL_INSTALL)
 	if test -d $(srcdir)/$(PACKAGE_DATA_DIR); then \
 	  $(mkinstalldirs) $(DESTDIR)/$(pkgdatadir)/$(PACKAGE_DATA_DIR); \
-	  cd $(srcdir)/$(PACKAGE_DATA_DIR) ; tar cf -  --exclude "Makefile.in" --exclude "*.in" --exclude "*~" --exclude "Makefile" --exclude "Makefile.am" --exclude .git * | ( cd $(DESTDIR)/$(pkgdatadir)/$(PACKAGE_DATA_DIR) ; tar xf -) ; cd .. ; \
+	  cd $(srcdir)/$(PACKAGE_DATA_DIR) ; tar cf - --dereference --exclude "Makefile.in" --exclude "*.in" --exclude "*~" --exclude "Makefile" --exclude "Makefile.am" --exclude .git * | ( cd $(DESTDIR)/$(pkgdatadir)/$(PACKAGE_DATA_DIR) ; tar xf -) ; cd .. ; \
 	fi
 
 dist-hook:
 	if test -d $(PACKAGE_DATA_DIR); then \
 	  $(mkinstalldirs) $(distdir)/$(PACKAGE_DATA_DIR); \
-	  cd $(srcdir)/$(PACKAGE_DATA_DIR) ; tar cf -  --exclude "Makefile.in" --exclude "Makefile" --exclude "*~" --exclude ".*" --exclude .git * | ( cd ../$(distdir)/$(PACKAGE_DATA_DIR) ; tar xf -) ; cd .. ; \
+	  cd $(srcdir)/$(PACKAGE_DATA_DIR) ; tar cf - --dereference --exclude "Makefile.in" --exclude "Makefile" --exclude "*~" --exclude ".*" --exclude .git * | ( cd ../$(distdir)/$(PACKAGE_DATA_DIR) ; tar xf -) ; cd .. ; \
 	fi
 	@if test -d "$(srcdir)/.git"; \
 	then \