updating OSX Giac

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29098 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
NP exceptions in Unit test maybe fixed #1376

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29099 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
build.xml is not needed for Eclipse build -> removing


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29102 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3669: minor fix (who knows how this works in GWT)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29104 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e