Expand Exodus name limits

[roystgnr]

We have users running up against the 32-character limit, and it looks like we ought to be able to go to 80.

[jwpeterson]

Interesting that all those exo files got bigger even though their contents should not have changed, I guess it's because we are writing more "blank" padding spaces at the end of every string whether we need them or not?

[roystgnr]

I think we are writing more blank padding spaces, but I also added some long subdomain names to the tests that use those files (which was a good idea; just tossing a few exII calls in blind turned out to require a couple bug fixes afterward), so the files should have all changed regardless.

[roystgnr]

The MOOSE test failures I should have anticipated; those are truncated gold files upstream.

The DistributedMesh failures look like a simple mistake to fix.

[moosebuild]

Job Coverage, step Generate coverage on 6a9aebc wanted to post the following:

Coverage

	727f46	#4229 6a9aeb
	Total	Total	+/-	New
Rate	64.55%	64.54%	-0.01%	96.30%
Hits	75863	75863	-	26
Misses	41668	41680	+12	1

Diff coverage report

Full coverage report

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