Automate process of using gcc5:

* 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

bin/ci/ubuntu/install-dependencies.sh

@@ -17,10 +17,10 @@ done
 export PATH=$PWD/bin:$PATH
 
 # What versions are we ACTUALLY running?
-if [ -x $HOME/bin/g++]; then
+if [ -x $HOME/bin/g++ ]; then
     $HOME/bin/g++ -v
 fi
-if [ -x $HOME/bin/clang]; then
+if [ -x $HOME/bin/clang ]; then
     $HOME/bin/clang -v
 fi
 # Avoid `spurious errors` caused by ~/.npm permission issues