Handle slin16 for extra sounds as well.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@212386 65c4cc65-6c06-0410-ace0-fbb531ad65f3

sounds/Makefile

@@ -41,6 +41,7 @@ MES:=$(subst -ALAW,-alaw,$(MES))
 MES:=$(subst -GSM,-gsm,$(MES))
 MES:=$(subst -G729,-g729,$(MES))
 MES:=$(subst -G722,-g722,$(MES))
+MES:=$(subst -SLN16,-sln16,$(MES))
 EXTRA_SOUNDS:=$(MES:EXTRA-SOUNDS-%=asterisk-extra-sounds-%-$(EXTRA_SOUNDS_VERSION).tar.gz)
 EXTRA_SOUND_TAGS:=$(MES:EXTRA-SOUNDS-%=$(SOUNDS_DIR)/.asterisk-extra-sounds-%-$(EXTRA_SOUNDS_VERSION))
 MM:=$(subst -FREEPLAY-,-freeplay-,$(MENUSELECT_MOH))