Branch out chef installation based on the project to handle the existance of appbundler.
Add libarchive which is required by berkshelf specs.
Merge pull request #136 from opscode/CC-49

[CC-49] Handle both chef-dk and chef-client pipelines
Remove -R linker option on Mac OS X

This option has apparently been completely ignored by the linker ever
since OS X switched to clang; in a recent update to clang/xcode tools,
this is now a warning that triggers compilation errors.
Remove -R so that OSX builds work fine with the latest CLI tools.
Merge pull request #137 from opscode/CC-61

Add libarchive which is required by berkshelf specs.
Build makedepend so openssl's build can use it.
Add pkg-config that is needed by makedepend.
Remove -R from Ruby config and add -Qunused-arguments to make autoconf not treat anything in stderr as a failure.
Document why -Qunused-arguments is required.
Merge pull request #139 from opscode/build-makedepend

Build makedepend so openssl's build can use it.
Disable the unneeded libarchive options.
Add libiconv dependency to pkg-config on freebsd.
Merge pull request #141 from opscode/freebsd-ci-fix

Add libiconv dependency to pkg-config on freebsd.
Compile popt without libintl to make Mac health checks happy.
Merge pull request #140 from opscode/libarchive-health-check-fix

Disable the unneeded libarchive options.
Disable more things in libarchive to make it ubuntu friendly.
Merge pull request #142 from opscode/libarchive-ubuntu

Disable more things in libarchive to make it ubuntu friendly.
Add gecode as a dependency of berks.
Upgrade R15 version and add non-default R16