Merge pull request #1412 from adamjstewart/features/cmake

var/spack/repos/builtin/packages/cmake/intel-c-gnu11.patch

var/spack/repos/builtin/packages/cmake/package.py

var/spack/repos/builtin/packages/expat/package.py

var/spack/repos/builtin/packages/jsoncpp/package.py

var/spack/repos/builtin/packages/libarchive/package.py

var/spack/repos/builtin/packages/libxml2/package.py

var/spack/repos/builtin/packages/lz4/package.py

var/spack/repos/builtin/packages/lzma/package.py

var/spack/repos/builtin/packages/lzo/package.py

var/spack/repos/builtin/packages/nettle/package.py

var/spack/repos/builtin/packages/xz/package.py

var/spack/repos/builtin/packages/zlib/package.py