[PATCH 0 of 3] Add hashdigits global option.

[Eric Hopper]

This is a set of changes to both improve global option processing in
some small ways as well as add a global option to allow you to set the
number of hash digits printed by default in the output of various
commands.

I am weird and I prefer referring to revisions with their full hash
values even though 12 digits is enough that it will likely uniquely
identify every revision in a repository with a million changesets.  I've
long maintained a patch that allows me to do this without using the
--debug flag, and I thought that a patch that allowed this to be
controlled more flexibly might be something a lot of people would want.

A config option is added as well.  The 'hashdigits' option in the 'ui'
section.

[ui]
hashdigits=12

These changes can be pulled from:

http://hg.omnifarious.org/~hopper/merc-tocrew/

Or they can be pulled from the attached bundle.

-- 
Eric Hopper / http://www.omnifarious.org/~hopper/

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