[giac] last improvements for point handling

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26636 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] serialize GeoVector as point(1,2)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26637 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26638 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] Insure rational parametric equation for conics defined with approx points

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26639 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fix for erf(negative multiprecision real) 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26640 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fix UnitVector[(1,2,3)]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26641 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Bugfixes for Android (closeOptions)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26642 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e