Updated contrib/vim/patchreview.* to version 0.2.1
1) adds a :DiffReview command to review code changes
in the current workspace.
2) removes the need to have patchutils (specifically filterdiff)
installed on the system by implementing patch extraction in
pure vim script.
adding changeset.txt
adding mymap
0 97e5f848f0936960273bbf75be6388cd0350a32b test