Use sockets instead of handles, use bytestrings instead of strings

Engine: * Avoid any offset applied if weapon's origin is set to (0, 0)

Frontend: * Fixed main menu tips not showing up

Remove decrement of iterator health. Might fix weird health bug.

Engine: * Fixed laser sight's origin while jumping and it disappearing for different angles

now engine can be optionally built as library, there's an example wrapper of how to use it building server is now disabled by default, saves users some headaches

Frontend: * Avoid overwriting/replacing premade game/weapon schemes

fix iphone version for map preview add gl_priority constant (doesn't affect opengles) fix building hwlibrary

map preview generation reworked like nemo suggested (he was right, it's quickier in this way) add some rounding image capabilities for more professional look

Engine: * Added texture priorities to try to keep often used sprite textures as well as huge textures in video memory - this should improve performance on systems with low video memory * Fixed portal gun's weapon offset

a bunch of minor stuff

Engine: * Removed horizontal weapon offsets for now (shouldn't affect human player's gameplay but that of AI) Frontend: * Added some main menu tips

Remove rope offset

add some memory aware code revert sdl calls to past implementation (the one that did not crash) add some debug methods found online