* hpcviewer: new package
Add binary package for hpcviewer and hpctraceviewer for the Rice
hpctoolkit on Linux x86_64, ppc64 and ppc64le.
* ibm-java: add property 'home' so that spec['java'].home will work.
* Flake
* More flake.
* Test that the version, machine type pair exists before using it in the
sha dictionaries so that 'spack info' doesn't crash on unsupported
configurations.
* Add binary package of the IBM Java SDK for big and little-endian
powerpc (power7, 8 and 9). The jdk and openjdk packages only install
on x86_64.
* Add ibm-java as a java provider
* The jdk and openjdk packages only install on x86_64. Add conflicts
for ppc64 and ppc64le to jdk and openjdk.
