Modifying sounds/Makefile to pull down 1.4.24 core sounds

1.4.24 core sounds includes a full set of Italian prompts for core sounds and a fix for the missing voicemail prompts in the Russian language.

(closes issue ASTERISK-19431)
(closes issue ASTERISK-19721)
........

Merged revisions 386877 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@386878 65c4cc65-6c06-0410-ace0-fbb531ad65f3