Modifying Makefile and sounds.xml to include new core 1.4.26 and extra 1.4.15
sound prompt releases, plus the new Japanese core sound prompts contributed
by QLOOG.

ASTERISK-23324
Reported by: Kevin McCoy
Tested by: Rusty Newton
........

Merged revisions 422789 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@422790 65c4cc65-6c06-0410-ace0-fbb531ad65f3