This rather large commit refactors the build system to solve a number of problems: - Object literal types are now declared in just one place - There are no more circular dependencies - There is no need for concealed subclasses in build-standalone mode When building in standalone mode, you need to include the source in build/src/external. This declares object literal types as externs so that their properties are not renamed. When building with the application, you need to include the source in build/src/internal. This declares object literal types as typedefs so that their properties can be renamed and removed. Note also that ol.MapOptions has been merged into ol.Map, with some renaming.
The git-update-ghpages script comes from https://github.com/rstacruz/git-update-ghpages. It is modified to fix syntax errors, as reported in this issue, and prevent failures when there's nothing to commit.