* Changed task state resulting from both `rc` and `failed` fields returned, 'rc' no longer overrides 'failed'. Test plugins have also been updated accordingly.
* The win_unzip module no longer includes dictionary 'win_unzip' in its results,
the content is now directly in the resulting output, like pretty much every other module.
* Rewrite of the copy module so that it handles cornercases with symbolic links
and empty directories. The copy module has a new parameter, local_follow
which controls how links on the source system are treated. (The older
parameter, follow is for links on the remote system.)
* Update the handling of symbolic file permissions in file-related mode
parameters to deal with multiple operators. For instance, mode='u=rw+x-X' to
set the execute bit on directories, remove it from filea, and set read-write