Update OS X binaries and ant script

SFML version : 2013/01/23, 802b9378cbb41ea46055b05050e99fd097d579bf

Tested with :
 - JDK version : Java SE Development Kit 7u11
 - Java Developer Package for OS X 2012-006
 - OS X 10.8.2

Useful info for fish shell : set JAVA_HOME with

    set -Ux JAVA_HOME (/usr/libexec/java_home)
Merge pull request #46 from mantognini/update-osx-binaries

Update OS X binaries and ant script