deflate_fast
local int deflate_fast OF((deflate_state *s, int flush));
quit = deflate_fast(state, flush);
local block_state deflate_fast OF((deflate_state *s, int flush));
/* 1 */ {4, 4, 8, 4, deflate_fast}, /* maximum speed, no lazy matches */
/* 2 */ {4, 5, 16, 8, deflate_fast},
/* 3 */ {4, 6, 32, 32, deflate_fast},