--all to guard 'hg resolve' from mis-operation

[FUJIWARA Katsunori]

Now, 'hg resolve' treats all files as target, when no filename is
specified.

But, does it result in unexpected operation ?

In fact, I already mis-operate it some times in few hours for
evaluation of 'hg resolve'.

I think that '--all' should be introduced into 'hg resolve' like as
'hg revert' to guard from mis-operation, at least for '-m'/'-u' and
re-merge(no-opt).

Sorry, if such discussion was already concluded. I can not find any
threads in ML archive.

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[FUJIWARA Katsunori]      fujiwara at ascade.co.jp(foozy at lares.dti.ne.jp)