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)
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Merged revisions 386877 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 386878 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@386879 f38db490-d61c-443f-a65b-d21fe96a405b