GSoC2013 Video Write Code. Thank You, Mahesh for a lot of hard work.  And Thanks to Abhinav for mentoring.  Great Job, Guys.

git-svn-id: svn://dev.exiv2.org/svn@3355 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
fix MSVC build errors for GSoC2013 VideoWrite

git-svn-id: svn://dev.exiv2.org/svn@3356 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3