remove ffi_yajl monkeypatching

also remove last few straggling JSON gem uses.  requires a minor version
bump of ohai to pick up DateTime serialization to JSON.
Encapsulate print command in function

Necessary for Python 3.2.x, tested to still work on Python 2.4.x on
CentOS 5.  Also closes #56
fix specs
modernize specs with expect()
remove empty before block
Merge pull request #398 from opscode/lcg/remove-json-monkeypatching

remove ffi_yajl monkeypatching
Merge pull request #322 from opscode/lcg/python-parens

Encapsulate print command in function
Update CHANGELOG for the last two releases

Ohai 7.2.0 shipped with Chef 11.14.2
Ohai 7.2.2 was built with Chef 11.14.4 but wasn't released due to some missing commits in Chef
Ohai 7.2.4 was shipped with Chef 11.14.6
Merge pull request #402 from opscode/btm/fix-master-changelog

Update CHANGELOG for the last two releases
Ignore passwd plugin on Windows

The Etc module returns nil on Windows for everything useful.
Merge pull request #403 from opscode/btm/passwd-spec-fix

Ignore passwd plugin on Windows
fix busted rake install

seems like some prior refactoring was too aggressive and not tested or
something...
Merge pull request #404 from opscode/lcg/fix-rake-install

fix busted rake install
Add license to gemspec
Add rake to the bundle to be able to run 'bundle exec rake gem' in build.
Merge pull request #407 from opscode/sersut/fix-rake-gem

Add rake to the bundle to be able to run 'bundle exec rake gem' in build.
bump mixlib-shellout + misc gemspec

- bumps ohai version
- update homepage
- update rake now that we've dropped 1.8
Merge pull request #408 from opscode/lcg/mixlib-shellout-bump

bump mixlib-shellout + misc gemspec
drop 1.8.7 and 1.9.2 from travis, remove 1.8.7 hack
bumping to 7.6.0.rc.0