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

Graphics: * Updated ammo menu numbers

Engine (Henek): * Moved some utility weapons to a new 10th row * Added adjustable flame output to Flamethrower (left/right controls power/intensity) * Added fuel display to flame thrower Frontend: * Added support to bind the new 10th row (default: F10)

Engine: * Fixed aiming for Ballgun and Flamethrower

Engine: * New weapon attributes: ejectX/ejectY: Offset to the hedgehog (center of hand graphic) where the projectile(s) will be spawned * Changed Laser Sight to origin from the weapon instead of the hedgehog (needs some adjustments while walking/jumping) * Changed most weapons to no longer shoot from the hedgehog's center and use the weapon's visible position instead (might require some testing and adjustments) * Silenced the small Piano explosions