BUG: add missing include for vtkIntArray
BUG: add missing include for vtkIntArray

git-svn-id: 57095f3f1b55701339693087546ab105a45f9ce4@7885 5e132c66-7cf4-0310-b4ca-cd4a7079c2d8

IGSIO/OpenIGTLinkIO,IGSIO/OpenIGTLinkIO