Update all.bib

Adding Betancourt-Girolami to bibliography in preparation for including Michael's commentary that the "Matt trick" only helps hierarchical models when there is a lot of data. See <https://groups.google.com/d/msg/stan-users/dFFTF0n6mYo/WN3vWOf9ktAJ> and <https://groups.google.com/d/msg/stan-users/dFFTF0n6mYo/lTIfqVN8AB8J>.
Update programming.tex

Including Michael's commentary that the "Matt trick" only helps hierarchical models when there is a lot of data. See <https://groups.google.com/d/msg/stan-users/dFFTF0n6mYo/WN3vWOf9ktAJ> and <https://groups.google.com/d/msg/stan-users/dFFTF0n6mYo/lTIfqVN8AB8J>.
Update all.bib

Fix Url
Update programming.tex

Spacing
Merge pull request #617 from aadler/patch-1

patch looks good; merging
Update all.bib

Updating arXiv entries and adding link to updated HoffmanGelman
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Starting to clean up Bib file a bit. Stopping to check Sk\"old
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Finishing semi-cleanup of active bib items.
Update all.bib

Correcting accidental deletion. Note that there are multiple versions of the same entry, and unused items should probably be pruned.
Update all.bib

Removed case
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Change case
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Adjust spacing; remove tabs
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Why does Github web access seem to always cut off the last 4000+ lines?
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Based on http://eigen.tuxfamily.org/index.php?title=BibTeX
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Cleaning \url
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This is actually its proper name per http://code.google.com/p/googletest/wiki/Primer. Also makes it fit neatly without ugly full justification.
Merge pull request #620 from aadler/patch-1

Looks good.  Thanks for making all the changes.
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-597-function-lang
functions passing all tests