From Eddy Offermann:

- added a Streamer function to TMatrixTSparse to remove a memory leak.
  Updated LinkDef.h accordingly.

- added vector functionality as proposed by Peter D Barnes from LNL
  (http://root.cern.ch/phpBB2/viewtopic.php?t=8351).

  Mult function: double   s = v1 * M * v2;  // e.g., physics matrix element 
  OuterProduct : TMatrixD M = v1' * v2      // outer product of v1 and v2


git-svn-id: http://root.cern.ch/svn/root/trunk@30125 27541ba8-7e3a-0410-8455-c3a389f83636