PION-1326: Some MSVC projects have incorrect output directories
Defined OutDir and IntDir for TestPlugins project, just to keep it from
creating unneeded directories.
Removed OutDir and IntDir for piond project, because it should use the
values in pion.props.
Merge pull request #16 in RND/pion from PION-1326 to develop

# By Mignon Belongie
# Via Mignon Belongie
* commit '259363470d66d7bf7e3d456cf1f0b27724299153':
  PION-1326: Some MSVC projects have incorrect output directories Defined OutDir and IntDir for TestPlugins project, just to keep it from creating unneeded directories. Removed OutDir and IntDir for piond project, because it should use the values in pion.props.