sqlite plugin: use mapnik::geometry_container alias
refactor spirit grammars
Merge branch 'master' of github.com:mapnik/mapnik into grammar-refactor
add missing files that instanciate grammars for python bindings
try 4 cores
JOBS=6 for clang++, 2 for g++
travis: even more aggressive JOBS
Merge pull request #2314 from mapnik/grammar-refactor

Grammar refactor