7df91dcc05e1cd03f5997c94e2cc676e513823dd

Much of the code (especially related to comment handling and diff parsing) can be reuesd for different types of output, like the N-way merge diffs or the side-by-side display. By extracting this to a new top-level we can hoist some code into a common base Action class. Signed-off-by: Shawn O. Pearce <sop@google.com>
Description
RETIRED, Gerrit as used by OpenStack