* fix suite-sparse built with tbb from intel-parallel-studio

* intel: add tbb_headers, strip newline from cxx_lib

* use property

The source is managed as a set of files in an FTP URL. Since there
are no FetchStrategy's implemented for this setup, the files are
managed as a set of Resource's

Add dependencies to CMake and GnuTLS which would otherwise be
picked up from the system

* Add gnutls as explicit dependency of CMake
* Add new package libidn2 as explicit dependency for gnutls

- `svn info` prints different results depending on the system locale
  - in particular, Japanese output doesn't contain "Revision:"

- Change Spack code to use XML output instead of using the human output

pkgconfig is the correct virtual dependency while pkg-config is a
specific implementation.

* LBANN: add python dependency and required python library dependencies
* LBANN: add version 0.99 as alias for develop branch
* LBANN: build Conduit library by default
* LBANN: CUB is included with Hydrogen for later versions
* New package: py-graphviz (dependency for LBANN)
* New package: py-texttable (dependency for LBANN)
* New package: py-onnx (dependency for LBANN)
* New package: py-typing-extensions (dependency for py-onnx)
* Conduit: add version 0.4.0
* NCCL: Add versions 2.4.6-1 and 2.4.2-1
* Protobuf: Add versions 3.7.1 and 3.7.0
* py-protobuf: add version 3.7.1
* py-typing: add version 3.6.4
* cuDNN: add versions. The source differs depending on the
  architecture, so the versions include a suffix to encode this.
  For example this adds 7.5.1-10.1-x86_64 as well as
  7.5.1-10.1-ppc64le
* cuDNN: Newer versions require newer versions of CUDA
* Hydrogen: add configure options for CUB and Aluminum

The --enable-relax-coord-bound option was added in 1.8.0. NetCDF
4.6.3 enabled relax coords by default and required it from PNetCDF.
PNetCDF 1.10.0 enabled it by default but for versions between 1.8.0
and 1.10.0 it should be enabled explicitly.

CUDA 10.0 provides Compatability libraries for running newer versions
of CUDA with older drivers. These do not work with newer drivers.

* megadock: new package at 4.0.3

* megadock: remove CudaPackage redundancies

* megadock: move env vars to build targets, use cuda_arch variant

* megadock: flake8 fixes, more flexible mathlib

* Fix py-yt for Python 2 by requesting older py-ipython version.
* Add conflicts statement to py-ipython because version 7: is not
  compatible with python@2.7

Remove a vestigial print statement introduced in #8570

* rename py-pauvr to py-pauvre

f242f5f8 removed spec.architecture.platform_os, which was used to test
an option in the 'm4' package. The attribute is now accessed as
'spec.architecture.os'.

- Trying to get our Python 2.6 tests working again.
- This seems to crash travis in the 2.6 environment, for whatever reason.