* [build][CMake] Use `find_package(Git)` to confirm existence before trying to use git for version stamp; Use friendlier detection of grep executable on Windows; Use "del" on Windows instead of "rm".
* [build][Windows] Include dirent and msinttypes headers in source tree.
* Remove grep dependency for lua exports generation
* Sneaky pythons hiding in code.
* [build] Change `git_id` macro to skip check if no git directory is present, also now fails gracefully; Fix `today` macro on Windows; Report git revision; Make sure QtSvg module is found.
