FreeType: fix cve-2014-2241-2240

Integrate community fix for the freetype security issues
CVE-2014-2241 and CVE-2014-2240

Signed-off-by: Priyanka Shobhan <priyanka_shobhan@mentor.com>
Merge pull request #175 from pshobhan/phobhan/bugfixes/SB-2683

FreeType: fix cve-2014-2241-2240