Don't download/install the sound packages if already installed.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@76791 65c4cc65-6c06-0410-ace0-fbb531ad65f3

sounds/Makefile

@@ -130,13 +130,13 @@ $(MOH_DIR)/.asterisk-moh-%: have_download
 	touch $@
 
 asterisk-core-%.tar.gz: have_download
-	@if test ! -f $@ ;then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
+	@if test ! -f $@ && test ! -f $(SOUNDS_DIR)/.$(subst .tar.gz,,$@) ; then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
 
 asterisk-extra-%.tar.gz: have_download
-	@if test ! -f $@ ;then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
+	@if test ! -f $@ && test ! -f $(SOUNDS_DIR)/.$(subst .tar.gz,,$@) ; then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
 
 asterisk-moh-%.tar.gz: have_download
-	@if test ! -f $@ ;then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
+	@if test ! -f $@ && test ! -f $(MOH_DIR)/.$(subst .tar.gz,,$@) ; then $(DOWNLOAD) $(WGET_ARGS) $(SOUNDS_URL)/$@;fi
 
 dist-clean:
 	rm -f *.tar.gz