Reworked ASSERT() and Int3() macros to use SDL_assert(). SDL_assert() allows to debug break from user decision.
Major reorganizing platform-dependent code to make it platform-independent.
Join the license header with historical comments using a separator so IDEs can correctly parse the initial header.
Also use .gitattributes to ensure all files are LF.
* Begin by marking functions and variables as static when needed.
* More work.
* More work.
* More pokes.
* More work.
* More work.
* Initial work on the netgames.
* Revert changes to the license header on source files.
* clutter.cpp poke.
* One final poke.
* Move some declarations to headers:
Move paged_in_count and paged_in_num to gamesequence.h
Move DoneLightInstance and StartLightInstance to polymodel.h
* Look over the AI script/plug-ins.
* Going over the changes one last time.
* Fix rebase errors.
* More migration from bare statics to static inlines.
