Same fix in lasem branch (avoids a crash here).


git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/branches/gsoc2013lasem@33247 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6
Fixed build errors and warnings, added svg code, refactored LasemMathview methods

git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/branches/gsoc2013lasem@33257 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6
wrongly changed goffice version in previous commit

git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/branches/gsoc2013lasem@33258 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6