Update .gitignore
Update .gitignore
Unify inclusion schema
Merge branch '2.8.x' of https://github.com/egoboo/egoboo into 2.8.x

Resolved conflicts:
	.gitignore
	egolib/bsp.c
Update ENet packaged external dependency

The "master" branch of ENet includes CMake build files.
This simplifies compilation for Windows.
Remove redundant archive of packaged dependency PhysicsFS

We can expect Windows and Mac users to unpack *.tar.bz2 files (using 7zip, for instance).
Update .gitignore