* Replace Ubuntu scons dependency with cmake
* Remove dependency installation support for Ubuntu 12.04 Precise Pangolin.
It is EOL'd as of 2017-04-28. http://releases.ubuntu.com/12.04/
Clang does not understand gcc 5's new ABI. On linux systems
that default to the new ABI (such as ubuntu 15.10), building
with clang requires using C++ libraries built with the the old
gcc ABI.
When building with the clang protobuf lib, a common error is to
load the gcc protobuf library at run time. When set, PROTOBUF_ROOT
is added to rpath to make sure the correct lib is loaded.
Adds a script to install clang and download and build boost and
protobuf with boost.
* SConstruct will set ABI based on ubuntu flavor
* Script to bring in packages for various ubuntu flavors
* Script to bring in packages for various fedora 22
* Remove unneeded environment variable from travis
* Script to build boost with correct API flags
* `--static` flag to control static linking
