This implies creating a trimmed down branch that contains almost
nothing. It will then be usable by projects that do not need the
complex build system, and by the engine itself as a submodule from
the same repository.

Added workbench, for personnal experimentation.

to get M_PI from the platform headers and cast it to float.

- removed 0 CR characters
 - removed 188 trailing whitespaces
 - replaced 537 tabs with spaces

TODO : second pass on coding-style, and some tweak & usage modification.