Fixes in Atrac3plus java decoder.
Started work on Atrac3 java decoder.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3599 4ab978e6-3352-0410-996c-0b42db0051c8
Updated sceAtracLowLevelDecode to use the new java Atrac3+ decoder. This should improve its compatibility for Atrac3+ audio.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3600 4ab978e6-3352-0410-996c-0b42db0051c8