Made a fix to the induced accelerations analysis so that it does not require the point of force application for external forces to be mapped to the foot frame. 
Made a fix to the induced accelerations analysis so that it does not require the point of force application for external forces to be mapped to the foot frame. 

git-svn-id: 9e047e1e624cce0a2485e750063112e834f85522@6660 fc29be9c-2cb0-420d-b520-73dbd18add6e

opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core