fixed distribution as dmg if srcdir != top_builddir

(cherry picked from commit feec0f30c55220f3f0be73940899f036cc72c012)

Makefile.am

@@ -1084,12 +1084,13 @@ package-macosx: VLC-release.app ChangeLog
 	else \
 	  cp -R "$(top_builddir)/VLC.app" "$(top_builddir)/vlc-$(VERSION)/VLC.app"; \
 	fi
-	cd "$(srcdir)" && mkdir -p $(top_builddir)/vlc-$(VERSION)/Goodies/ && \
+	mkdir -p $(top_builddir)/vlc-$(VERSION)/Goodies/ && \
           mkdir -p $(top_builddir)/vlc-$(VERSION)/.background/ && \
-          cp AUTHORS COPYING ChangeLog README THANKS NEWS $(top_builddir)/vlc-$(VERSION)/Goodies/ && \
-          cp -R  extras/package/macosx/Delete_Preferences.app $(top_builddir)/vlc-$(VERSION)/Goodies/Delete\ VLC\ Preferences.app && \
-	  cp extras/package/macosx/README.MacOSX.rtf $(top_builddir)/vlc-$(VERSION)/Read\ Me.rtf && \
-	  cp extras/package/macosx/Resources/about_bg.png $(top_builddir)/vlc-$(VERSION)/.background/background.png
+          cp $(srcdir)/AUTHORS $(srcdir)/COPYING $(srcdir)/README $(srcdir)/THANKS $(srcdir)/NEWS $(top_builddir)/vlc-$(VERSION)/Goodies/ && \
+          cp -R  $(srcdir)/extras/package/macosx/Delete_Preferences.app $(top_builddir)/vlc-$(VERSION)/Goodies/Delete\ VLC\ Preferences.app && \
+	  cp $(srcdir)/extras/package/macosx/README.MacOSX.rtf $(top_builddir)/vlc-$(VERSION)/Read\ Me.rtf && \
+	  cp $(srcdir)/extras/package/macosx/Resources/about_bg.png $(top_builddir)/vlc-$(VERSION)/.background/background.png
+	cp -L $(top_builddir)/ChangeLog $(top_builddir)/vlc-$(VERSION)/Goodies/
 
 # Place a link to the application folder
 	ln -s /Applications $(top_builddir)/vlc-$(VERSION)/Applications