support lua require()
fix gitignore to avoid ignoring subfolders. add missing lua file
code cleanup, merge Lua.h and LuaUtil.h
remove unused struct MinimalEdgeData
simple rake tasks for extracting/preparing separately
show total running time when extracting
update ferry tests
Revert "remove unused struct MinimalEdgeData"

This reverts commit 0235cf5d8e9e1d3d8b15513ffaf1bbe8da3fcad0.
ordering includes alphabetically
increase stxxl allocation used in tests, to avoid reallocation
Splitting monolithic extraction code into compile units
Splitting monolithic extraction code into compile units
Splitting monolithic extraction code into compile units
Merge branch 'develop' of https://github.com/DennisOSRM/Project-OSRM into develop
removing profile
Add symlink to the profile in the respective folde
Fixes the Birminingham speed limit bug reported by Philip Barnes
Removing debug output
fix a few restrictions tests
Merge pull request #550 from ibikecph/lua_require

easy lua require()