Update partitioning-big-data.txt

Add in a note about the default parsing behaviour of load-graph.py when there is no recognised file extension.
update MANIFEST.in
add remainder of libz libs
Merge pull request #374 from ged-lab/fix/manifest

fix zlib via MANIFEST.in & setup.py
Remove argparse from the requirements

unless it isn't available. Argparse is bundled with Python 2.7+.
This simplifies the installation instructions. Tested with cpython 2.6
& 2.7 on Ubuntu 13.10.
Merge pull request #401 from ged-lab/fix/argparse-nodep

Remove argparse from the requirements
Merge pull request #400 from ctSkennerton/patch-1

Update partitioning-big-data.txt
Explicit python2 invocation
Bypass clang error

See http://bruteforce.gr/bypassing-clang-error-unknown-argument.html
Merge pull request #412 from ged-lab/fix/jenkins-osx

Bypass clang error
Merge pull request #404 from ged-lab/fix/python2

Explicit python2 invocation
fixed thread hanging issue khmer#384
fixed spelling error
Merge pull request #406 from ged-lab/fix/infinite_threadloop

fixed thread hanging issue
updated normalize-by-median documentation for loadtable; see #376
Merge pull request #378 from ged-lab/update/normalize-loadtable

updated normalize-by-median documentation for loadtable
Merge branch 'master' of github.com:ged-lab/khmer into docs/add_spellcheck_to_review_checklist

Conflicts:
	ChangeLog