Upgrade patchelf
 add osx.9 fix for netcdf4
Add in support for netcdf4 cpp bindings.
Add an example linux netcdf configuration.
Add a test to verify that netcdf and netcdfcpp builds correctly.
Move netcdf4 test to a namespaced test, also fix names of netcdf packages.
Make 'hit' tool available from Bash in hashstack scripts
Relocateable packages
added pure python memory profiling package
Prepend PKG_CONFIG_PATH in when_build_dependency.

This helps avoiding accidents where we accidentally use
a system package despite specifying a local package.
Add Piranha package
Update README.md
Update ansible to 1.6.3
Merge pull request #286 from jcftang/wip-update-ansible

Update ansible to 1.6.3
Sphinx should be a distutils package

setuptools installs an extra tests folder which breaks some profiles.
Add pkg-config dependency

matplotlib uses pkg-config to detect dependencies (freetype).
Merge pull request #288 from kajiglet/patch-1

Add pkg-config dependency to matplotlib
Update ansible package to use a release tarball instead of a git checkout
Update ruby to 2.1.2 -- latest stable
Merge pull request #289 from jcftang/wip-update-ansible-release-tarball

Update ansible package to use a release tarball instead of a git checkou...