UPM requires swig 3.0.5 which *was* offered in fenics-exp, but is
no longer available there. Switched to fenics-dev.
Signed-off-by: Noel Eck <noel.eck@intel.com>
The env CC=clang builds were previously getting overridden for each build since
the language: cpp defaults gcc/g++ (travis-ci was not building UPM w/clang).
This commit explicitly adds the clang compiler to the build matrix.
* Specify gcc/clang in the compiler directive
* Add a node.js 0.10 entry
* Add a few debug messages
* General cleanup of .travis.yml
* Add the upm make install step for completeness
Signed-off-by: Noel Eck <noel.eck@intel.com>
